HETEROLEPTIC OSMIUM COMPLEX AND METHOD OF MAKING THE SAME

A method of making an osmium(II) complex having Formula I, L1-Os-L2, wherein L1 and L2 are independently a biscarbene tridentate ligand, wherein L1 and L2 can be same or different is disclosed. The method includes (a) reacting a precursor of ligand L1 with an osmium precursor to form an intermediate product, wherein the osmium precursor having the formula OsHx(PR3)y, wherein x is an integer from 2 to 6 and y is an integer from 2 to 5, and R is selected from the group consisting of aryl, alkyl and cycloalkyl; and (b) reacting a precursor of ligand L2 with said intermediate product.

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Description
PARTIES TO A JOINT RESEARCH AGREEMENT

The claimed invention was made by, on behalf of, and/or in connection with one or more of the following parties to a joint university corporation research agreement: Regents of the University of Michigan, Princeton University, University of Southern California, and the Universal Display Corporation. The agreement was in effect on and before the date the claimed invention was made, and the claimed invention was made as a result of activities undertaken within the scope of the agreement.

FIELD OF THE INVENTION

The present invention relates to compounds for use as emitters and devices, such as organic light emitting diodes, including the same. More particularly, the compounds disclosed herein are novel heteroleptic bistridentate osmium carbene complexes and a novel synthetic method to make both homoleptic and heteroleptic bistridentate osmium carbene complexes.

BACKGROUND

Opto-electronic devices that make use of organic materials are becoming increasingly desirable for a number of reasons. Many of the materials used to make such devices are relatively inexpensive, so organic opto-electronic devices have the potential for cost advantages over inorganic devices. In addition, the inherent properties of organic materials, such as their flexibility, may make them well suited for particular applications such as fabrication on a flexible substrate. Examples of organic opto-electronic devices include organic light emitting devices (OLEDs), organic phototransistors, organic photovoltaic cells, and organic photodetectors. For OLEDs, the organic materials may have performance advantages over conventional materials. For example, the wavelength at which an organic emissive layer emits light may generally be readily tuned with appropriate dopants.

OLEDs make use of thin organic films that emit light when voltage is applied across the device. OLEDs are becoming an increasingly interesting technology for use in applications such as flat panel displays, illumination, and backlighting. Several OLED materials and configurations are described in U.S. Pat. Nos. 5,844,363, 6,303,238, and 5,707,745, which are incorporated herein by reference in their entirety.

One application for phosphorescent emissive molecules is a full color display. Industry standards for such a display call for pixels adapted to emit particular colors, referred to as “saturated” colors. In particular, these standards call for saturated red, green, and blue pixels. Color may be measured using CIE coordinates, which are well known to the art.

One example of a green emissive molecule is tris(2-phenylpyridine) iridium, denoted Ir(ppy)3, which has the following structure:

In this, and later figures herein, we depict the dative bond from nitrogen to metal (here, Ir) as a straight line.

As used herein, the term “organic” includes polymeric materials as well as small molecule organic materials that may be used to fabricate organic opto-electronic devices. “Small molecule” refers to any organic material that is not a polymer, and “small molecules” may actually be quite large. Small molecules may include repeat units in some circumstances. For example, using a long chain alkyl group as a substituent does not remove a molecule from the “small molecule” class. Small molecules may also be incorporated into polymers, for example as a pendent group on a polymer backbone or as a part of the backbone. Small molecules may also serve as the core moiety of a dendrimer, which consists of a series of chemical shells built on the core moiety. The core moiety of a dendrimer may be a fluorescent or phosphorescent small molecule emitter. A dendrimer may be a “small molecule,” and it is believed that all dendrimers currently used in the field of OLEDs are small molecules.

As used herein, “top” means furthest away from the substrate, while “bottom” means closest to the substrate. Where a first layer is described as “disposed over” a second layer, the first layer is disposed further away from substrate. There may be other layers between the first and second layer, unless it is specified that the first layer is “in contact with” the second layer. For example, a cathode may be described as “disposed over” an anode, even though there are various organic layers in between.

As used herein, “solution processible” means capable of being dissolved, dispersed, or transported in and/or deposited from a liquid medium, either in solution or suspension form.

A ligand may be referred to as “photoactive” when it is believed that the ligand directly contributes to the photoactive properties of an emissive material. A ligand may be referred to as “ancillary” when it is believed that the ligand does not contribute to the photoactive properties of an emissive material, although an ancillary ligand may alter the properties of a photoactive ligand.

As used herein, and as would be generally understood by one skilled in the art, a first “Highest Occupied Molecular Orbital” (HOMO) or “Lowest Unoccupied Molecular Orbital” (LUMO) energy level is “greater than” or “higher than” a second HOMO or LUMO energy level if the first energy level is closer to the vacuum energy level. Since ionization potentials (IP) are measured as a negative energy relative to a vacuum level, a higher HOMO energy level corresponds to an IP having a smaller absolute value (an IP that is less negative). Similarly, a higher LUMO energy level corresponds to an electron affinity (EA) having a smaller absolute value (an EA that is less negative). On a conventional energy level diagram, with the vacuum level at the top, the LUMO energy level of a material is higher than the HOMO energy level of the same material. A “higher” HOMO or LUMO energy level appears closer to the top of such a diagram than a “lower” HOMO or LUMO energy level.

As used herein, and as would be generally understood by one skilled in the art, a first work function is “greater than” or “higher than” a second work function if the first work function has a higher absolute value. Because work functions are generally measured as negative numbers relative to vacuum level, this means that a “higher” work function is more negative. On a conventional energy level diagram, with the vacuum level at the top, a “higher” work function is illustrated as further away from the vacuum level in the downward direction. Thus, the definitions of HOMO and LUMO energy levels follow a different convention than work functions.

More details on OLEDs, and the definitions described above, can be found in U.S. Pat. No. 7,279,704, which is incorporated herein by reference in its entirety.

SUMMARY OF THE INVENTION

According to an aspect of the present disclosure, a method of making an osmium(II) complex having Formula I

L1-Os-L2, wherein L1 and L2 are independently a biscarbene tridentate ligand, wherein L1 and L2 can be same or different is disclosed. The method comprises: (a) reacting a precursor of ligand L1 with an osmium precursor to form an intermediate product, wherein the osmium precursor having the formula OsHx(PR3)y, wherein x is an integer from 2 to 6 and y is an integer from 2 to 5, and R is selected from the group consisting of aryl, alkyl and cycloalkyl; and (b) reacting a precursor of ligand L2 with said intermediate product.

In one embodiment of the method, L1 and L2 are monoanionic ligands. In some embodiments, L1 and L2 are independently selected from ligands having Formula II:

wherein Y1, Y2 and Y3 comprise C or N; wherein R3 and R4 may represent mono-, or di-substitutions, or no substitution; wherein R5 may represent mono-, di-, or tri-substitutions, or no substitution; wherein R1, R2, R3, R4 and R5 are independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof; wherein any two adjacent substituents of R1, R2, R3, R4 and R5 are optionally joined to form a ring; and wherein the dash lines show the connection points to osmium.

According to an embodiment, a compound having the structure according to Formula I as defined herein is disclosed.

According to another aspect of the present disclosure, a first device comprising a first organic light emitting device is disclosed. The first organic light emitting device comprises an anode; a cathode; and an organic layer, disposed between the anode and the cathode. The organic layer can comprise a compound having the structure according Formula I

The novel compounds, heteroleptic bistridentate osmium carbene complexes, and a novel synthetic method to make both homoleptic and heteroleptic bistridentate osmium carbene complexes disclosed herein are useful as emitters in organic light emitting devices. The inventors have discovered that the incorporation of these ligands can narrow the emission spectrum and improve device efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows an organic light emitting device.

FIG. 2 shows an inverted organic light emitting device that does not have a separate electron transport layer.

FIG. 3 shows molecular diagram of complex monohydride with X-ray diffraction analysis characterization.

FIG. 4 shows molecular diagram of Complex A with X-ray diffraction analysis characterization.

DETAILED DESCRIPTION

Generally, an OLED comprises at least one organic layer disposed between and electrically connected to an anode and a cathode. When a current is applied, the anode injects holes and the cathode injects electrons into the organic layer(s). The injected holes and electrons each migrate toward the oppositely charged electrode. When an electron and hole localize on the same molecule, an “exciton,” which is a localized electron-hole pair having an excited energy state, is formed. Light is emitted when the exciton relaxes via a photoemissive mechanism. In some cases, the exciton may be localized on an excimer or an exciplex. Non-radiative mechanisms, such as thermal relaxation, may also occur, but are generally considered undesirable.

The initial OLEDs used emissive molecules that emitted light from their singlet states (“fluorescence”) as disclosed, for example, in U.S. Pat. No. 4,769,292, which is incorporated by reference in its entirety. Fluorescent emission generally occurs in a time frame of less than 10 nanoseconds.

More recently, OLEDs having emissive materials that emit light from triplet states (“phosphorescence”) have been demonstrated. Baldo et al., “Highly Efficient Phosphorescent Emission from Organic Electroluminescent Devices,” Nature, vol. 395, 151-154, 1998; (“Baldo-I”) and Baldo et al., “Very high-efficiency green organic light-emitting devices based on electrophosphorescence,” Appl. Phys. Lett., vol. 75, No. 3, 4-6 (1999) (“Baldo-II”), which are incorporated by reference in their entireties. Phosphorescence is described in more detail in U.S. Pat. No. 7,279,704 at cols. 5-6, which are incorporated by reference.

FIG. 1 shows an organic light emitting device 100. The figures are not necessarily drawn to scale. Device 100 may include a substrate 110, an anode 115, a hole injection layer 120, a hole transport layer 125, an electron blocking layer 130, an emissive layer 135, a hole blocking layer 140, an electron transport layer 145, an electron injection layer 150, a protective layer 155, a cathode 160, and a barrier layer 170. Cathode 160 is a compound cathode having a first conductive layer 162 and a second conductive layer 164. Device 100 may be fabricated by depositing the layers described, in order. The properties and functions of these various layers, as well as example materials, are described in more detail in U.S. Pat. No. 7,279,704 at cols. 6-10, which are incorporated by reference.

More examples for each of these layers are available. For example, a flexible and transparent substrate-anode combination is disclosed in U.S. Pat. No. 5,844,363, which is incorporated by reference in its entirety. An example of a p-doped hole transport layer is m-MTDATA doped with F4-TCNQ at a molar ratio of 50:1, as disclosed in U.S. Patent Application Publication No. 2003/0230980, which is incorporated by reference in its entirety. Examples of emissive and host materials are disclosed in U.S. Pat. No. 6,303,238 to Thompson et al., which is incorporated by reference in its entirety. An example of an n-doped electron transport layer is BPhen doped with Li at a molar ratio of 1:1, as disclosed in U.S. Patent Application Publication No. 2003/0230980, which is incorporated by reference in its entirety. U.S. Pat. Nos. 5,703,436 and 5,707,745, which are incorporated by reference in their entireties, disclose examples of cathodes including compound cathodes having a thin layer of metal such as Mg:Ag with an overlying transparent, electrically-conductive, sputter-deposited ITO layer. The theory and use of blocking layers is described in more detail in U.S. Pat. No. 6,097,147 and U.S. Patent Application Publication No. 2003/0230980, which are incorporated by reference in their entireties. Examples of injection layers are provided in U.S. Patent Application Publication No. 2004/0174116, which is incorporated by reference in its entirety. A description of protective layers may be found in U.S. Patent Application Publication No. 2004/0174116, which is incorporated by reference in its entirety.

FIG. 2 shows an inverted OLED 200. The device includes a substrate 210, a cathode 215, an emissive layer 220, a hole transport layer 225, and an anode 230. Device 200 may be fabricated by depositing the layers described, in order. Because the most common OLED configuration has a cathode disposed over the anode, and device 200 has cathode 215 disposed under anode 230, device 200 may be referred to as an “inverted” OLED. Materials similar to those described with respect to device 100 may be used in the corresponding layers of device 200. FIG. 2 provides one example of how some layers may be omitted from the structure of device 100.

The simple layered structure illustrated in FIGS. 1 and 2 is provided by way of non-limiting example, and it is understood that embodiments of the invention may be used in connection with a wide variety of other structures. The specific materials and structures described are exemplary in nature, and other materials and structures may be used. Functional OLEDs may be achieved by combining the various layers described in different ways, or layers may be omitted entirely, based on design, performance, and cost factors. Other layers not specifically described may also be included. Materials other than those specifically described may be used. Although many of the examples provided herein describe various layers as comprising a single material, it is understood that combinations of materials, such as a mixture of host and dopant, or more generally a mixture, may be used. Also, the layers may have various sublayers. The names given to the various layers herein are not intended to be strictly limiting. For example, in device 200, hole transport layer 225 transports holes and injects holes into emissive layer 220, and may be described as a hole transport layer or a hole injection layer. In one embodiment, an OLED may be described as having an “organic layer” disposed between a cathode and an anode. This organic layer may comprise a single layer, or may further comprise multiple layers of different organic materials as described, for example, with respect to FIGS. 1 and 2.

Structures and materials not specifically described may also be used, such as OLEDs comprised of polymeric materials (PLEDs) such as disclosed in U.S. Pat. No. 5,247,190 to Friend et al., which is incorporated by reference in its entirety. By way of further example, OLEDs having a single organic layer may be used. OLEDs may be stacked, for example as described in U.S. Pat. No. 5,707,745 to Forrest et al, which is incorporated by reference in its entirety. The OLED structure may deviate from the simple layered structure illustrated in FIGS. 1 and 2. For example, the substrate may include an angled reflective surface to improve out-coupling, such as a mesa structure as described in U.S. Pat. No. 6,091,195 to Forrest et al., and/or a pit structure as described in U.S. Pat. No. 5,834,893 to Bulovic et al., which are incorporated by reference in their entireties.

Unless otherwise specified, any of the layers of the various embodiments may be deposited by any suitable method. For the organic layers, preferred methods include thermal evaporation, ink-jet, such as described in U.S. Pat. Nos. 6,013,982 and 6,087,196, which are incorporated by reference in their entireties, organic vapor phase deposition (OVPD), such as described in U.S. Pat. No. 6,337,102 to Forrest et al., which is incorporated by reference in its entirety, and deposition by organic vapor jet printing (OVJP), such as described in U.S. Pat. No. 7,431,968, which is incorporated by reference in its entirety. Other suitable deposition methods include spin coating and other solution based processes. Solution based processes are preferably carried out in nitrogen or an inert atmosphere. For the other layers, preferred methods include thermal evaporation. Preferred patterning methods include deposition through a mask, cold welding such as described in U.S. Pat. Nos. 6,294,398 and 6,468,819, which are incorporated by reference in their entireties, and patterning associated with some of the deposition methods such as ink jet and OVJD. Other methods may also be used. The materials to be deposited may be modified to make them compatible with a particular deposition method. For example, substituents such as alkyl and aryl groups, branched or unbranched, and preferably containing at least 3 carbons, may be used in small molecules to enhance their ability to undergo solution processing. Substituents having 20 carbons or more may be used, and 3-20 carbons is a preferred range. Materials with asymmetric structures may have better solution processibility than those having symmetric structures, because asymmetric materials may have a lower tendency to recrystallize. Dendrimer substituents may be used to enhance the ability of small molecules to undergo solution processing.

Devices fabricated in accordance with embodiments of the present invention may further optionally comprise a barrier layer. One purpose of the barrier layer is to protect the electrodes and organic layers from damaging exposure to harmful species in the environment including moisture, vapor and/or gases, etc. The barrier layer may be deposited over, under or next to a substrate, an electrode, or over any other parts of a device including an edge. The barrier layer may comprise a single layer, or multiple layers. The barrier layer may be formed by various known chemical vapor deposition techniques and may include compositions having a single phase as well as compositions having multiple phases. Any suitable material or combination of materials may be used for the barrier layer. The barrier layer may incorporate an inorganic or an organic compound or both. The preferred barrier layer comprises a mixture of a polymeric material and a non-polymeric material as described in U.S. Pat. No. 7,968,146, PCT Pat. Application Nos. PCT/US2007/023098 and PCT/US2009/042829, which are herein incorporated by reference in their entireties. To be considered a “mixture”, the aforesaid polymeric and non-polymeric materials comprising the barrier layer should be deposited under the same reaction conditions and/or at the same time. The weight ratio of polymeric to non-polymeric material may be in the range of 95:5 to 5:95. The polymeric material and the non-polymeric material may be created from the same precursor material. In one example, the mixture of a polymeric material and a non-polymeric material consists essentially of polymeric silicon and inorganic silicon.

Devices fabricated in accordance with embodiments of the invention may be incorporated into a wide variety of consumer products, including flat panel displays, computer monitors, medical monitors, televisions, billboards, lights for interior or exterior illumination and/or signaling, heads up displays, fully transparent displays, flexible displays, laser printers, telephones, cell phones, personal digital assistants (PDAs), laptop computers, digital cameras, camcorders, viewfinders, micro-displays, 3-D displays, vehicles, a large area wall, theater or stadium screen, or a sign. Various control mechanisms may be used to control devices fabricated in accordance with the present invention, including passive matrix and active matrix. Many of the devices are intended for use in a temperature range comfortable to humans, such as 18 degrees C. to 30 degrees C., and more preferably at room temperature (20-25 degrees C.), but could be used outside this temperature range, for example, from −40 degree C. to +80 degree C.

The materials and structures described herein may have applications in devices other than OLEDs. For example, other optoelectronic devices such as organic solar cells and organic photodetectors may employ the materials and structures. More generally, organic devices, such as organic transistors, may employ the materials and structures.

The terms halo, halogen, alkyl, cycloalkyl, alkenyl, alkynyl, aralkyl, heterocyclic group, aryl, aromatic group, and heteroaryl are known to the art, and are defined in U.S. Pat. No. 7,279,704 at cols. 31-32, which are incorporated herein by reference.

As used herein, “substituted” indicates that a substituent other than H is bonded to the relevant carbon. Thus, where R2 is monosubstituted, then one R2 must be other than H. Similarly, where R3 is disubstituted, then two of R3 must be other than H. Similarly, where R2 is unsubstituted R2 is hydrogen for all available positions.

In the present disclosure, novel heteroleptic bistridentate Os(II) complexes and a novel method for synthesizing both homoleptic and heteroleptic bistridentate Os(II) complexes is provided. Heteroleptic osmium complexes provide great freedom of tuning emission color, electrochemical energy levels, and improving evaporation properties.

Osmium (II) complexes have been investigated for OLED applications. The octahedral ligand arrangement of the Os(II) complexes resembles that of Ir(III) complexes. Os(II) complexes generally exhibit low oxidation potential, i.e. shallow HOMO energy level than Ir(III) complexes. The inventors have discovered that bistridentate Os(II) carbene complexes offer performance advantages for OLED applications. Without being bound to a theory, the inventors believe that the rigid nature of the tridentate ligands are providing narrow emission line widths and short excited state lifetimes, which can result in better color purity and longer device lifetime, making them suitable for display applications.

US2005260449 and WO2009046266 disclosed bistridentate Os(II) complexes. Examples of homoleptic Os(II) complexes were provided. The two tridentate ligands binding to Os(II) metal are identical. It may be beneficial to incorporate two different ligands to Os(II) metal to form a heterlopetic complex. For example, the thermal properties, electrochemical properties, and photophysical properties can be tuned by selecting two proper ligands. It offers more flexibility for materials design than two identical ligands.

The synthesis of homoleptic complexes, however, has been challenging; let alone the heteroleptic complexes. The synthesis method used in WO2009046266 generated very low yield, typically 2-5%. In a later application, US2012215000, the yield was significantly improved to over 30% using a new osmium precursor. In theory, both of these methods should work for synthesis of heteroleptic bistridentate Os(II) complexes by introducing two different ligands at the complexation stage and isolating the desired heteroleptic complex from the reaction mixture. The synthesis will be extremely inefficient and impractical.

The inventors have developed a new stepwise complexation method. This method is suitable for making both homoleptic and heteroleptic bistridentate Os(II) complexes. As shown in the scheme below, an osmium precursor was first reacted with a bistridentate ligand to generate an intermediate that has one tridentate ligand coordinated to the metal. The intermediate was then treated with another tridentate ligand to generate the final complex. Depending on the structure of the second ligand, homoleptic or heteroleptic complexes can be synthesized. In addition, the yield was improved. One example of the inventive synthetic method is shown below:

In describing the novel synthesis method of the inventors, all reactions were carried out with rigorous exclusion of air using Schlenk-tube techniques. Solvents, except DMF and acetonitrile that were dried and distilled under argon, were obtained oxygen- and water-free from an MBraun solvent purification apparatus. 1H, 31P{1H}, 19F and 13C{1H} NMR spectra were recorded on Bruker 300 ARX, Bruker Avance 300 MHz, and Bruker Avance 400 MHz instruments. Chemical shifts (expressed in parts per million) are referenced to residual solvent peaks (1H, 13C {1H}) or external 85% H3PO4 (31P {1H}), or external CFCl3 (19F). Coupling constants J and N are given in hertz. Attenuated total reflection infrared spectra (ATR-IR) of solid samples were run on a Perkin-Elmer Spectrum 100 FT-IR spectrometer. C, H, and N analyses were carried out in a Perkin-Elmer 2400 CHNS/O analyzer. High-resolution electrospray mass spectra were acquired using a MicroTOF-Q hybrid quadrupole time-of-flight spectrometer (Bruker Daltonics, Bremen, Germany). OsH6(PiPr3)2 was prepared by the method published in Aracama, M.; Esteruelas, M. A.; Lahoz, F. J.; López, J. A.; Meyer, U.; Oro, L. A.; Werner, H. Inorg. Chem. 1991, 30, 288.

Preparation of Dihydride-BF4

A solution of OsH6(PiPr3)2 (261 mg, 0.505 mmol) in dimethylformamide (DMF) (5 mL) was treated with 1,3-bis[(1-methyl)benzylimidazolium-3-yl]benzene diiodide (300 mg, 0.505 mmol). The resulting mixture was refluxed for 20 min, getting a very dark solution. After cooling at room temperature the solvent was removed in vacuo, affording a dark residue. The residue was dissolved in acetonitrile (10 mL) and AgBF4 (98.3 mg, 0.505 mmol) was added. After stirring protected from the light for 30 min the resulting suspension was filtered through Celite to remove the silver salts. The solution thus obtained was evaporated to ca. 0.5 mL and diethyl ether (10 mL) was added to afford a beige solid, that was washed with further portions of diethyl ether (2×2 mL) and dried in vacuo. Yield: 240 mg (50%). Analytical Calculation for C40H61BF4N4OsP2: C, 51.28; H, 6.56; N, 5.98. Found: C, 51.55; H, 6.70; N, 5.62. HRMS (electrospray, m/z): calcd for C40H61N4OsP2 [M]+: 851.3983; found: 851.4036. IR (cm−1): v(Os—H) 2104 (w), v(BF4) 1080-1000 (vs). 1H NMR (300 MHz, CD3CN, 298K): δ 8.31 (m, 2H, CH bzm), 7.98 (d, JH-H=7.9, 2H, CH Ph), 7.70 (m, 2H, CH bzm), 7.57 (t, JH-H=7.9, 1H, CH Ph), 7.54-7.50 (m, 4H, CH bzm), 4.32 (s, 6H, CH3), 1.54 (m, 6H, PCH(CH3)2), 0.67 (dvt, JHH=6.2, N=13.2, 36H, PCH(CH3)2), −6.25 (t, JH-P=13.6, 2H, Os—H). 13C {1H} NMR (75.42 MHz, CD3CN, 293K): δ 189.4 (t, JC-P=7.5, NCN), 161.3 (Os—C), 146.9 (s, CPh), 137.3 (s, CBzm), 132.8 (s, C Bzm), 124.9 (s, CH Bzm), 124.5 (s, CH Bzm), 124.2 (s, CH Ph), 112.8 (s, CH Bzm), 111.9 (s, CH Bzm), 109.2 (s, CH Ph), 38.9 (s, CH3), 29.3 (t, N=27, PCH(CH3)2), 18.5 (s, PCH(CH3)2). 31P{1H} NMR (121.4 MHz, CD3CN, 293K): δ 4.5 (s).

Preparation of Complex Monohydride, Shown Below:

This monohydride compound can be prepared by using two different methods. Method (A): A solution of OsH6(PiPr3)2 (261 mg, 0.505 mmol) in DMF (5 mL) was treated with 1,3-bis[(1-methyl)benzylimidazolium-3-yl]benzene diiodide (300 mg, 0.505 mmol). The resulting mixture was refluxed for 20 min, getting a very dark solution. After cooling at room temperature the solvent was removed in vacuo, affording a dark residue. The dark residue was dissolved in 10 mL of tetrahydrofuran (THF) and KtBuO (142 mg, 1.263 mmol) was added to the solution. After stirring at room temperature for 10 min the resulting suspension was filtered through Celite to remove the potassium salts. The solution thus obtained was evaporated to dryness to afford a yellow residue. Addition of pentane afforded a yellow solid, which was washed with pentane (1×2 mL) and dried in vacuo to obtain a yellow solid. Yield: 378 mg (88%). Method (B): A solution of dihydride-BF4 (200 mg, 0.213 mmol) in THF (5 mL) was treated with KtBuO (28.6 mg, 0.255 mmol). After stirring at room temperature for 10 min the resulting suspension was filtered through Celite to remove the potassium salts. The solution thus obtained was evaporated to dryness to afford a yellow residue. Addition of pentane afforded a yellow solid, which was washed with pentane (1×2 mL) and dried in vacuo obtain a yellow solid. Yield: 163 mg (90%). Anal. Calcd. for C40H60N4OsP2: C, 56.58; H, 7.12; N, 6.60. Found: C, 56.00; H, 6.69; N, 6.76. HRMS (electrospray, m/z): calcd. For [M+H]+ 851.3983; found: 851.3979. IR (cm−1): v(Os—H) 1889 (w). 1H NMR (300 MHz, C6D6, 298K): δ 8.17 (d, JH-H=7.7, 2H, CH Ph), 8.06 (d, JH-H=7.7, 2H, CH bzm), 7.60 (t, JH-H=7.7, 1H, CH Ph), 7.20 (td, JH-H=7.9, JH-H=1.0, 2H, CH bzm), 7.14-7.03 (m, 4H CH bzm), 3.92 (s, 6H, CH3), 1.55 (m, 6H, PCH(CH3)2), 0.67 (dvt, JH-H=6.9, N=12.3, 36H, PCH(CH3)2), −9.55 (t, JH-P=33.6, 1H, Os—H). 13C {1H} NMR (75.42 MHz, C6D6, 293K): δ 197.6 (t, JC-P=9.2, Os—NCN), 173.2 (t, JC-P=2.9, Os—C), 148.4 (s, CPh), 137.3 (s, C Bzm), 134.4 (s, CBzm), 121.5 (s, CH Bzm), 121.2 (s, CH Bzm), 117.9 (s, CH Ph), 109.6 (s, CH Bzm), 108.5 (s, CH Bzm), 105.8 (s, CH Ph), 37.9 (s, CH3), 31.0 (t, N=24.2, PCH(CH3)2), 19.7 (s, PCH(CH3)2). 31P {1H} NMR (121.4 MHz, C6D6, 293K): δ 20.6 (s, doublet under off resonance conditions). FIG. 3 shows the molecular structure of complex monohydride with the X-ray diffraction analysis characterization. Selected bond lengths (A) and angles)(°) were: Os—P(1)=2.3512(18), Os—P(2)=2.3529(17), Os—C(1)=2.052(6), Os—C(9)=2.036(3), Os—C(15)=2.035(6); P(1)-Os—P(2)=152.86(6), C(1)-Os—C(9)=75.5(2), C(9)-Os—C(15)=75.4(2), C(1)-Os(C15)=150.9(2).

Preparation of Complex Monohydride-CF3:

Method (A): A solution of dihydride-CF3-BF4 (200 mg, 0.2 mmol) in THF (5 mL) was treated with KtBuO (26.8 mg, 0.24 mmol). After stirring at room temperature for 10 min the resulting suspension was filtered through Celite to remove the potassium salts. The solution thus obtained was evaporated to dryness to afford a yellow residue. Addition of pentane afforded a yellow solid, which was washed with pentane (1×2 mL) and dried in vacuo obtain a yellow solid. Yield: 240 mg (50%). Anal. Calcd. for C4H59F3N4OsP2: C, 53.69; H, 6.48; N, 6.11. Found: C, 53.20; H, 6.33; N, 6.18. IR (cm−1): v(Os—H) 1842 (w). 1H NMR (300 MHz, C6D6, 298K): δ 8.53 (s, 2H, CH Ph-CF3), 8.18 (m, 2H, CH bzm), 7.15-6.98 (m, 6H, CH bzm), 3.86 (s, 6H, CH3), 1.49 (m, 6H, PCH(CH3)2), 0.60 (dvt, JH.H=6.6, N=12.9, 36H, PCH(CH3)2), −9.29 (t, JH-P=34.0, 1H, Os—H). 13C {1H} NMR (75.42 MHz, C6D6, 293K): δ 197.4 (t, JC-P=9.0, Os—NCN), 173.2 (t, JC-P=3.6, Os—C), 148.0 (s, CPh), 137.2 (s, CBzm), 133.9 (s, CBzm), 128.2 (q, JC-F=270.0, CF3), 122.0 (s, CH Bzm), 121.7 (s, CH Bzm), 118.9 (q, JC-F=30.8, C—CF3), 109.8 (s, CH Bzm), 108.7 (s, CH Bzm), 102.0 (q, JC-F=4.0 CH Ph), 37.9 (s, CH3), 30.9 (t, N=24.8, PCH(CH3)2), 19.5 (s, PCH(CH3)2). 31P {1H} NMR (121.4 MHz, C6D6, 293K): δ 21.4 (s, doublet under off resonance conditions). 19F NMR 282 MHz, C6D6, 293K): 6-60.10 (CF3). Method (B): A solution of OsH6(PiPr3)2 (235 mg, 0.455 mmol) in DMF (5 mL) was treated with 1,3-bis[(1-methyl)benzylimidazolium-3-yl]-5-trifluoromethyl-benzene diiodide (300 mg, 0.455 mmol). The resulting mixture was refluxed for 20 min, getting a very dark solution. After cooling at room temperature the solvent was removed in vacuo, affording a dark residue. The addition of 4 mL of toluene caused the precipitation of a brown solid that was washed with further portions of diethyl ether (2×4 mL). The brown solid was dissolved in THF (10 mL) and KtBuO (102 mg, 0.906 mmol) was added. After stirring for 20 min the resulting suspension was filtered through Celite to remove the iodide salts. The solution thus obtained was evaporated to dryness and pentane (4 mL) was added to afford an orange solid that was washed with further portions of pentane (1×3 mL) and dried in vacuo. This orange solid was suspended in diethyl ether (10 mL) and treated with HBF4:Et2O (93 μL, 0.680 mmol) getting a white suspension. This solid was decanted, washed with further portions of diethyl ether (2×4 mL) and dried in vacuo. Yield: 405 mg (89%) Anal. Calcd. for C41H60BF7N4OsP2: C, 49.00; H, 6.02; N, 5.58. Found: C, 49.21; H, 5.79; N, 5.69. HRMS (electrospray, m/z): calcd for [M]+: 919.3857; found: 919.4035. IR (cm−1): v(Os—H) 2097 (w), v(BF4) 1080-1000 (vs). 1H NMR (300 MHz, CD3CN, 298K): δ 9.60 (m, 2H, CH bzm), 9.41 (s, 2H, CH Ph), 8.96 (m, 2H, CH bzm), 8.80 (m, 4H, CH bzm), 5.57 (s, 6H, CH3), 2.80 (m, 6H, CHP), 1.91 (dvt, 36H, JHH=7.1, N=13.5, CH3-P), −4.70 (t, 2H, JH-P=13.5, Hhyd); 13C {1H}NMR (75.42 MHz, CD3CN, 293K): δ 189.6 (t, JC-P=7.5, NCN), 169.6 (t, JC-P=5.7, Os—C), 146.7 (s, C Ph), 137.4 (s, C Bzm), 132.6 (s, C Bzm), 126.7 (q, JC-F=270, CF3), 126.3 (q, JC-F=28.6, CCF3), 125.4 (s, CH Bzm), 125.1 (s, CH Bzm), 113.2 (s, CH Bzm), 112.3 (s, CH Bzm), 105.6 (q, JC-F=3.9, CH Ph), 39.1 (s, CH3), 29.5 (t, N=13.5, PCH(CH3)2), 19.6 (s, PCH(CH3)2). 31P {1H} NMR (121.4 MHz, CD3CN, 293K): δ 5.2 (s). 19F {1H} NMR (282 MHz, CD3CN, 293K): δ−60.21 (s, CF3); −151.7 (broad signal, BF4)

Preparation of Complex A:

Monohydride (250 mg, 0.294 mmol) and 1,3-bis[(1-methyl)benzylimidazolium-3-yl]benzene ditetrafluoroborate (181 mg, 0.353 mmol) were dissolved in 5 mL of DMF and triethyl amine (0.6 mL, 4.4 mmol) was added to the solution. The resulting mixture was refluxed for 1.5 h and then it was cooled to room temperature. The solvent was evaporated under vacuum to afford a brown residue. Addition of acetonitrile afforded a bright yellow solid that was washed with acetonitrile (1×2 mL) and dried in vacuo. Yield: 153 mg (60%). HRMS (electrospray, m/z): calcd for C44H34N8Os [M]+: 867.2562; found: 867.2597. 1H NMR (300 MHz, C6D6, 293K): δ 8.29 (d, JH-H=7.7, 4H, CH Ph), 8.18 (d, JH-H=7.9, 4H, CH bzm), 7.81 (t, JH-H=7.7, 2H, CH Ph), 7.08 (td, JH-H=7.9, JH-H=1.0, 4H, CH bzm), 6.80 (td, JH-H=7.9, JH-H=1.0, 4H, CH bzm), 6.18 (d, JH-H=7.9, 4H, CH bzm), 2.25 (s, 12H, CH3). 13C {1H} NMR (75.42 MHz, C6D6, 293K): δ 192.6 (s, Os—NCN), 171.1 (s, Os—C), 146.8 (s, CPh), 137.2 (s, CBzm), 133.4 (s, CBzm), 121.43 (s, CH Bzm), 121.03 (s, CH Bzm), 117.8 (s, CH Ph), 109.9 (s, CH Bzm), 109.0 (s, CH Bzm), 106.4 (s, CH Ph), 32.7 (s, CH3). FIG. 4 shows molecular diagram of Complex A with X-ray diffraction analysis characterization. The structure has two chemically equivalent but crystallographically independent molecules in the asymmetric unit. Selected bond lengths (A) and angles (°): Os(1)-C(10)=2.048(7), 2.057 (7), Os(1)-C(32)=2.045(7), 2.049 (8), Os(1)-C(15)=2.026(8), 2.032 (8), Os(1)-C(1)=2.042(8), 2.037 (7), Os(1)-C(23)=2.049(7), 2.037 (8), Os(1)-C(37)=2.043(7), 2.051(8); C(15)-Os(1)-C(1)=149.6(3), 149.9 (3), C(23)-Os(1)-C(37)=150.0(3), 150.6 (3), C(10)-Os(1)-C(32)=177.8(3), 178.6 (3).

Preparation of Complex A-CF3:

Monohydride (250 mg, 0.294 mmol) and 1,3-bis[(1-methyl)benzylimidazolium-3-yl]-5-trifluoromethyl-benzene ditetrafluoroborate (170 mg, 0.294 mmol) were dissolved in 5 mL of DMF and triethyl amine (0.6 mL, 4.4 mmol) was added to the solution. The resulting mixture was refluxed for 1.5 h and then it was cooled to room temperature. The solvent was evaporated under vacuum to afford a brown residue. Addition of acetonitrile afforded a bright yellow solid that was washed with acetonitrile (1×2 mL) and dried in vacuo. Yield: 147 mg (53%). HRMS (electrospray, m/z): calcd for C45H33F3N8Os [M]+: 934.2392; found: 934.2398. 1H NMR (300 MHz, C6D6, 293K): δ 8.75 (s, 2H, CH Ph-CF3), 8.24 (d, JH-H=7.8, 2H, CH Ph), 8.16 (d, JH-H=7.8, 2H, CH bzm), 8.14 (d, JH-H=7.8, 2H, CH bzm), 7.78 (t, JH-H=7.8, 1H, CH Ph), 7.08 (t, JH-H=7.8, 2H, CH bzm), 6.99 (t, JH-H=7.8, 2H, CH bzm), 6.81 (t, JH-H=7.9, 2H, CH bzm), 6.78 (t, JH-H=7.9, 2H, CH bzm), 6.21 (d, JH-H=7.8, 2H, CH bzm), 6.14 (d, JH-H=7.8, 2H, CH bzm), 2.22 (s, 6H, CH3), 2.11 (s, 6H, CH3). 13C {1H} NMR (100.63 MHz, C6D6, 293K): δ 192.4 (s, Os—NCN), 192.1 (s, Os—NCN), 179.0 (s, Os—C), 170.1 (s, Os—C), 146.7 (s, CPh), 146.5 (s, CPh), 137.2 (s, CBzm), 137.1 (s, CBzm), 133.4 (s, CBzm), 133.2 (s, CBzm), 128.4 (q, JC-F=270.4 Hz, CF3) 122.0 (s, CH Bzm), 121.8 (s, CH Bzm), 121.7 (s, CH Bzm), 121.4 (s, CH Bzm), 119.0 (q, JC-F=30.7 Hz, CCF3) 118.5 (s, CH Ph), 110.14 (s, CH Bzm), 110.08 (s, CH Bzm), 109.30 (s, CH Bzm), 109.28 (s, CH Bzm), 107.0 (s, CH Ph), 103.1 (q, JC-F=3.8 Hz, CHPh), 32.8 (s, CH3), 32.7 (s, CH3). 19F NMR (282 MHz, C6D6, 293K): δ −57.1 (CF3).

According to an aspect of the present disclosure, a method of making an osmium(II) complex having Formula I

L1-Os-L2, wherein L1 and L2 are independently a biscarbene tridentate ligand, wherein L1 and L2 can be same or different is disclosed. The method comprises: (a) reacting a precursor of ligand L1 with an osmium precursor to form an intermediate product, wherein the osmium precursor having the formula OsHx(PR3)y, wherein x is an integer from 2 to 6 and y is an integer from 2 to 5, and R is selected from the group consisting of aryl, alkyl and cycloalkyl; and (b) reacting a precursor of ligand L2 with said intermediate product.

In one embodiment of the method, L1 and L2 are monoanionic ligands. In some embodiments, L1 and L2 are independently selected from ligands having Formula II:

wherein Y1, Y2 and Y3 comprise C or N; wherein R3 and R4 may represent mono-, or di-substitutions, or no substitution; wherein R5 may represent mono-, di-, or tri-substitutions, or no substitution; wherein R1, R2, R3, R4 and R5 are independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof; wherein any two adjacent substituents of R1, R2, R3, R4 and R5 are optionally joined to form a ring; and wherein the dash lines show the connection points to osmium.

In one embodiment of the method, Y1, Y2 and Y3 comprise C. In one embodiment, Y1 and Y3 comprise C, and Y2 is N. In one embodiment, Y1 and Y3 are N, and Y2 comprise C. In one embodiment, R1 and R2 are independently selected from the group consisting of alkyl, cycloalkyl, aryl, heteroaryl, and partially or fully deuterated variants thereof. In one embodiment, R1 and R2 are independently selected from the group consisting of methyl, ethyl, propyl, 1-methylethyl, butyl, 1-methylpropyl, 2-methylpropyl, pentyl, 1-methylbutyl, 2-methylbutyl, 3-methylbutyl, 1,1-dimethylpropyl, 1,2-dimethylpropyl, 2,2-dimethylpropyl, cyclopentyl, cyclohexyl, partially or fully deuterated variants thereof, and combinations thereof.

In one embodiment of the method, the osmium precursor having the formula OsH6(PR3)2. In another embodiment, R in the osmium precursor having the formula OsH6(PR3)y is selected from the group consisting of methyl, ethyl, propyl, 1-methylethyl, butyl, 1-methylpropyl, 2-methylpropyl, 1,1-dimethylethyl, cyclohexyl, phenyl, 2,6-dimethylphenyl, and 2-methylphenyl. In other embodiment, R is 1-methylethyl.

In another embodiment, the ligands having Formula II are selected from the group consisting of:

According to an embodiment, a compound having a structure according to Formula I, L1-Os-L2 is provided, wherein L1 and L2 are different; wherein L1 and L2 are independently selected from ligands having Formula II,

In Formula II, Y1, Y2 and Y3 comprise C or N; wherein R3 and R4 may represent mono-, or di-substitutions, or no substitution; wherein R5 may represent mono-, di-, or tri-substitutions, or no substitution; wherein R1 and R2 are independently selected from the group consisting of alkyl and cycloalkyl; wherein R3, Wand R5 are independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, aralkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, and combinations thereof; wherein any two adjacent substituents of R1, R2, R3, R4 and R5 are optionally joined to condense into a fused ring; and wherein the dash lines show the connection points to osmium.

In an embodiment of the compound, Y1, Y2 and Y3 comprise C. In one embodiment of the compound, Y1 and Y3 comprise C, and Y2 is N. In some embodiments, Y1 and Y3 are N, and Y2 comprise C. In one embodiment, R1 and R2 are independently selected from the group consisting of alkyl, cycloalkyl, aryl, heteroaryl, and partially or fully deuterated variants thereof. In one embodiment, R1 and R2 are independently selected from the group consisting of methyl, ethyl, propyl, 1-methylethyl, butyl, 1-methylpropyl, 2-methylpropyl, pentyl, 1-methylbutyl, 2-methylbutyl, 3-methylbutyl, 1,1-dimethylpropyl, 1,2-dimethylpropyl, 2,2-dimethylpropyl, cyclopentyl, cyclohexyl, partially or fully deuterated variants thereof, and combinations thereof.

In some embodiments of the compound, L1 and L2 are independently selected from ligands having Formula III:

wherein X1, X2, X3, X4, X5, X6, X7 and X8 comprise C or N. In one embodiment, X1, X2, X3, X4, X5, X6, X7 and X8 comprise C.

In some embodiments, the ligands having Formula II are selected from the group consisting of: L101 to L159 defined herein.

In some embodiments, the compound having a structure according to Formula I, L1-Os-L2 is selected from the group consisting of Compounds 1 to 1159 defined in Table 1 below:

TABLE 1 Compound Number L1 L2 1. L101 L102 2. L101 L103 3. L101 L104 4. L101 L105 5. L101 L106 6. L101 L107 7. L101 L108 8. L101 L109 9. L101 L110 10. L101 L111 11. L101 L112 12. L101 L113 13. L101 L114 14. L101 L115 15. L101 L116 16. L101 L117 17. L101 L118 18. L101 L119 19. L101 L120 20. L101 L121 21. L101 L122 22. L101 L123 23. L101 L124 24. L101 L125 25. L101 L126 26. L101 L127 27. L101 L128 28. L101 L129 29. L101 L130 30. L101 L131 31. L101 L132 32. L101 L133 33. L101 L134 34. L101 L135 35. L101 L136 36. L101 L137 37. L101 L138 38. L101 L139 39. L101 L140 40. L101 L141 41. L101 L142 42. L101 L143 43. L101 L144 44. L101 L145 45. L101 L146 46. L101 L147 47. L101 L148 48. L101 L149 49. L101 L150 50. L101 L151 51. L101 L152 52. L101 L153 53. L101 L154 54. L101 L155 55. L101 L156 56. L101 L157 57. L101 L158 58. L101 L159 59. L102 L103 60. L102 L104 61. L102 L105 62. L102 L106 63. L102 L107 64. L102 L108 65. L102 L109 66. L102 L110 67. L102 L111 68. L102 L112 69. L102 L113 70. L102 L114 71. L102 L115 72. L102 L116 73. L102 L117 74. L102 L118 75. L102 L119 76. L102 L120 77. L102 L121 78. L102 L122 79. L102 L123 80. L102 L124 81. L102 L125 82. L102 L126 83. L102 L127 84. L102 L128 85. L102 L129 86. L102 L130 87. L102 L131 88. L102 L132 89. L102 L133 90. L102 L134 91. L102 L135 92. L102 L136 93. L102 L137 94. L102 L138 95. L102 L139 96. L102 L140 97. L102 L141 98. L102 L142 99. L102 L143 100. L102 L144 101. L102 L145 102. L102 L146 103. L102 L147 104. L102 L148 105. L102 L149 106. L102 L150 107. L102 L151 108. L102 L152 109. L102 L153 110. L102 L154 111. L102 L155 112. L102 L156 113. L102 L157 114. L102 L158 115. L102 L159 116. L103 L104 117. L103 L105 118. L103 L106 119. L103 L107 120. L103 L108 121. L103 L109 122. L103 L110 123. L103 L111 124. L103 L112 125. L103 L113 126. L103 L114 127. L103 L115 128. L103 L116 129. L103 L117 130. L103 L118 131. L103 L119 132. L103 L120 133. L103 L121 134. L103 L122 135. L103 L123 136. L103 L124 137. L103 L125 138. L103 L126 139. L103 L127 140. L103 L128 141. L103 L129 142. L103 L130 143. L103 L131 144. L103 L132 145. L103 L133 146. L103 L134 147. L103 L135 148. L103 L136 149. L103 L137 150. L103 L138 151. L103 L139 152. L103 L140 153. L103 L141 154. L103 L142 155. L103 L143 156. L103 L144 157. L103 L145 158. L103 L146 159. L103 L147 160. L103 L148 161. L103 L149 162. L103 L150 163. L103 L151 164. L103 L152 165. L103 L153 166. L103 L154 167. L103 L155 168. L103 L156 169. L103 L157 170. L103 L158 171. L103 L159 172. L104 L105 173. L104 L106 174. L104 L107 175. L104 L108 176. L104 L109 177. L104 L110 178. L104 L111 179. L104 L112 180. L104 L113 181. L104 L114 182. L104 L115 183. L104 L116 184. L104 L117 185. L104 L118 186. L104 L119 187. L104 L120 188. L104 L121 189. L104 L122 190. L104 L123 191. L104 L124 192. L104 L125 193. L104 L126 194. L104 L127 195. L104 L128 196. L104 L129 197. L104 L130 198. L104 L131 199. L104 L132 200. L104 L133 201. L104 L134 202. L104 L135 203. L104 L136 204. L104 L137 205. L104 L138 206. L104 L139 207. L104 L140 208. L104 L141 209. L104 L142 210. L104 L143 211. L104 L144 212. L104 L145 213. L104 L146 214. L104 L147 215. L104 L148 216. L104 L149 217. L104 L150 218. L104 L151 219. L104 L152 220. L104 L153 221. L104 L154 222. L104 L155 223. L104 L156 224. L104 L157 225. L104 L158 226. L104 L159 227. L105 L106 228. L105 L107 229. L105 L108 230. L105 L109 231. L105 L110 232. L105 L111 233. L105 L112 234. L105 L113 235. L105 L114 236. L105 L115 237. L105 L116 238. L105 L117 239. L105 L118 240. L105 L119 241. L105 L120 242. L105 L121 243. L105 L122 244. L105 L123 245. L105 L124 246. L105 L125 247. L105 L126 248. L105 L127 249. L105 L128 250. L105 L129 251. L105 L130 252. L105 L131 253. L105 L132 254. L105 L133 255. L105 L134 256. L105 L135 257. L105 L136 258. L105 L137 259. L105 L138 260. L105 L139 261. L105 L140 262. L105 L141 263. L105 L142 264. L105 L143 265. L105 L144 266. L105 L145 267. L105 L146 268. L105 L147 269. L105 L148 270. L105 L149 271. L105 L150 272. L105 L151 273. L105 L152 274. L105 L153 275. L105 L154 276. L105 L155 277. L105 L156 278. L105 L157 279. L105 L158 280. L105 L159 281. L106 L107 282. L106 L108 283. L106 L109 284. L106 L110 285. L106 L111 286. L106 L112 287. L106 L113 288. L106 L114 289. L106 L115 290. L106 L116 291. L106 L117 292. L106 L118 293. L106 L119 294. L106 L120 295. L106 L121 296. L106 L122 297. L106 L123 298. L106 L124 299. L106 L125 300. L106 L126 301. L106 L127 302. L106 L128 303. L106 L129 304. L106 L130 305. L106 L131 306. L106 L132 307. L106 L133 308. L106 L134 309. L106 L135 310. L106 L136 311. L106 L137 312. L106 L138 313. L106 L139 314. L106 L140 315. L106 L141 316. L106 L142 317. L106 L143 318. L106 L144 319. L106 L145 320. L106 L146 321. L106 L147 322. L106 L148 323. L106 L149 324. L106 L150 325. L106 L151 326. L106 L152 327. L106 L153 328. L106 L154 329. L106 L155 330. L106 L156 331. L106 L157 332. L106 L158 333. L106 L159 334. L107 L108 335. L107 L109 336. L107 L110 337. L107 L111 338. L107 L112 339. L107 L113 340. L107 L114 341. L107 L115 342. L107 L116 343. L107 L117 344. L107 L118 345. L107 L119 346. L107 L120 347. L107 L121 348. L107 L122 349. L107 L123 350. L107 L124 351. L107 L125 352. L107 L126 353. L107 L127 354. L107 L128 355. L107 L129 356. L107 L130 357. L107 L131 358. L107 L132 359. L107 L133 360. L107 L134 361. L107 L135 362. L107 L136 363. L107 L137 364. L107 L138 365. L107 L139 366. L107 L140 367. L107 L141 368. L107 L142 369. L107 L143 370. L107 L144 371. L107 L145 372. L107 L146 373. L107 L147 374. L107 L148 375. L107 L149 376. L107 L150 377. L107 L151 378. L107 L152 379. L107 L153 380. L107 L154 381. L107 L155 382. L107 L156 383. L107 L157 384. L107 L158 385. L107 L159 386. L108 L109 387. L108 L110 388. L108 L111 389. L108 L112 390. L108 L113 391. L108 L114 392. L108 L115 393. L108 L116 394. L108 L117 395. L108 L118 396. L108 L119 397. L108 L120 398. L108 L121 399. L108 L122 400. L108 L123 401. L108 L124 402. L108 L125 403. L108 L126 404. L108 L127 405. L108 L128 406. L108 L129 407. L108 L130 408. L108 L131 409. L108 L132 410. L108 L133 411. L108 L134 412. L108 L135 413. L108 L136 414. L108 L137 415. L108 L138 416. L108 L139 417. L108 L140 418. L108 L141 419. L108 L142 420. L108 L143 421. L108 L144 422. L108 L145 423. L108 L146 424. L108 L147 425. L108 L148 426. L108 L149 427. L108 L150 428. L108 L151 429. L108 L152 430. L108 L153 431. L108 L154 432. L108 L155 433. L108 L156 434. L108 L157 435. L108 L158 436. L108 L159 437. L109 L110 438. L109 L111 439. L109 L112 440. L109 L113 441. L109 L114 442. L109 L115 443. L109 L116 444. L109 L117 445. L109 L118 446. L109 L119 447. L109 L120 448. L109 L121 449. L109 L122 450. L109 L123 451. L109 L124 452. L109 L125 453. L109 L126 454. L109 L127 455. L109 L128 456. L109 L129 457. L109 L130 458. L109 L131 459. L109 L132 460. L109 L133 461. L109 L134 462. L109 L135 463. L109 L136 464. L109 L137 465. L109 L138 466. L109 L139 467. L109 L140 468. L109 L141 469. L109 L142 470. L109 L143 471. L109 L144 472. L109 L145 473. L109 L146 474. L109 L147 475. L109 L148 476. L109 L149 477. L109 L150 478. L109 L151 479. L109 L152 480. L109 L153 481. L109 L154 482. L109 L155 483. L109 L156 484. L109 L157 485. L109 L158 486. L109 L159 487. L110 L111 488. L110 L112 489. L110 L113 490. L110 L114 491. L110 L115 492. L110 L116 493. L110 L117 494. L110 L118 495. L110 L119 496. L110 L120 497. L110 L121 498. L110 L122 499. L110 L123 500. L110 L124 501. L110 L125 502. L110 L126 503. L110 L127 504. L110 L128 505. L110 L129 506. L110 L130 507. L110 L131 508. L110 L132 509. L110 L133 510. L110 L134 511. L110 L135 512. L110 L136 513. L110 L137 514. L110 L138 515. L110 L139 516. L110 L140 517. L110 L141 518. L110 L142 519. L110 L143 520. L110 L144 521. L110 L145 522. L110 L146 523. L110 L147 524. L110 L148 525. L110 L149 526. L110 L150 527. L110 L151 528. L110 L152 529. L110 L153 530. L110 L154 531. L110 L155 532. L110 L156 533. L110 L157 534. L110 L158 535. L110 L159 536. L111 L112 537. L111 L113 538. L111 L114 539. L111 L115 540. L111 L116 541. L111 L117 542. L111 L118 543. L111 L119 544. L111 L120 545. L111 L121 546. L111 L122 547. L111 L123 548. L111 L124 549. L111 L125 550. L111 L126 551. L111 L127 552. L111 L128 553. L111 L129 554. L111 L130 555. L111 L131 556. L111 L132 557. L111 L133 558. L111 L134 559. L111 L135 560. L111 L136 561. L111 L137 562. L111 L138 563. L111 L139 564. L111 L140 565. L111 L141 566. L111 L142 567. L111 L143 568. L111 L144 569. L111 L145 570. L111 L146 571. L111 L147 572. L111 L148 573. L111 L149 574. L111 L150 575. L111 L151 576. L111 L152 577. L111 L153 578. L111 L154 579. L111 L155 580. L111 L156 581. L111 L157 582. L111 L158 583. L111 L159 584. L112 L113 585. L112 L114 586. L112 L115 587. L112 L116 588. L112 L117 589. L112 L118 590. L112 L119 591. L112 L120 592. L112 L121 593. L112 L122 594. L112 L123 595. L112 L124 596. L112 L125 597. L112 L126 598. L112 L127 599. L112 L128 600. L112 L129 601. L112 L130 602. L112 L131 603. L112 L132 604. L112 L133 605. L112 L134 606. L112 L135 607. L112 L136 608. L112 L137 609. L112 L138 610. L112 L139 611. L112 L140 612. L112 L141 613. L112 L142 614. L112 L143 615. L112 L144 616. L112 L145 617. L112 L146 618. L112 L147 619. L112 L148 620. L112 L149 621. L112 L150 622. L112 L151 623. L112 L152 624. L112 L153 625. L112 L154 626. L112 L155 627. L112 L156 628. L112 L157 629. L112 L158 630. L112 L159 631. L113 L114 632. L113 L115 633. L113 L116 634. L113 L117 635. L113 L118 636. L113 L119 637. L113 L120 638. L113 L121 639. L113 L122 640. L113 L123 641. L113 L124 642. L113 L125 643. L113 L126 644. L113 L127 645. L113 L128 646. L113 L129 647. L113 L130 648. L113 L131 649. L113 L132 650. L113 L133 651. L113 L134 652. L113 L135 653. L113 L136 654. L113 L137 655. L113 L138 656. L113 L139 657. L113 L140 658. L113 L141 659. L113 L142 660. L113 L143 661. L113 L144 662. L113 L145 663. L113 L146 664. L113 L147 665. L113 L148 666. L113 L149 667. L113 L150 668. L113 L151 669. L113 L152 670. L113 L153 671. L113 L154 672. L113 L155 673. L113 L156 674. L113 L157 675. L113 L158 676. L113 L159 677. L114 L115 678. L114 L116 679. L114 L117 680. L114 L118 681. L114 L119 682. L114 L120 683. L114 L121 684. L114 L122 685. L114 L123 686. L114 L124 687. L114 L125 688. L114 L126 689. L114 L127 690. L114 L128 691. L114 L129 692. L114 L130 693. L114 L131 694. L114 L132 695. L114 L133 696. L114 L134 697. L114 L135 698. L114 L136 699. L114 L137 700. L114 L138 701. L114 L139 702. L114 L140 703. L114 L141 704. L114 L142 705. L114 L143 706. L114 L144 707. L114 L145 708. L114 L146 709. L114 L147 710. L114 L148 711. L114 L149 712. L114 L150 713. L114 L151 714. L114 L152 715. L114 L153 716. L114 L154 717. L114 L155 718. L114 L156 719. L114 L157 720. L114 L158 721. L114 L159 722. L115 L116 723. L115 L117 724. L115 L118 725. L115 L119 726. L115 L120 727. L115 L121 728. L115 L122 729. L115 L123 730. L115 L124 731. L115 L125 732. L115 L126 733. L115 L127 734. L115 L128 735. L115 L129 736. L115 L130 737. L115 L131 738. L115 L132 739. L115 L133 740. L115 L134 741. L115 L135 742. L115 L136 743. L115 L137 744. L115 L138 745. L115 L139 746. L115 L140 747. L115 L141 748. L115 L142 749. L115 L143 750. L115 L144 751. L115 L145 752. L115 L146 753. L115 L147 754. L115 L148 755. L115 L149 756. L115 L150 757. L115 L151 758. L115 L152 759. L115 L153 760. L115 L154 761. L115 L155 762. L115 L156 763. L115 L157 764. L115 L158 765. L115 L159 766. L116 L117 767. L116 L118 768. L116 L119 769. L116 L120 770. L116 L121 771. L116 L122 772. L116 L123 773. L116 L124 774. L116 L125 775. L116 L126 776. L116 L127 777. L116 L128 778. L116 L129 779. L116 L130 780. L116 L131 781. L116 L132 782. L116 L133 783. L116 L134 784. L116 L135 785. L116 L136 786. L116 L137 787. L116 L138 788. L116 L139 789. L116 L140 790. L116 L141 791. L116 L142 792. L116 L143 793. L116 L144 794. L116 L145 795. L116 L146 796. L116 L147 797. L116 L148 798. L116 L149 799. L116 L150 800. L116 L151 801. L116 L152 802. L116 L153 803. L116 L154 804. L116 L155 805. L116 L156 806. L116 L157 807. L116 L158 808. L116 L159 809. L117 L118 810. L117 L119 811. L117 L120 812. L117 L121 813. L117 L122 814. L117 L123 815. L117 L124 816. L117 L125 817. L117 L126 818. L117 L127 819. L117 L128 820. L117 L129 821. L117 L130 822. L117 L131 823. L117 L132 824. L117 L133 825. L117 L134 826. L117 L135 827. L117 L136 828. L117 L137 829. L117 L138 830. L117 L139 831. L117 L140 832. L117 L141 833. L117 L142 834. L117 L143 835. L117 L144 836. L117 L145 837. L117 L146 838. L117 L147 839. L117 L148 840. L117 L149 841. L117 L150 842. L117 L151 843. L117 L152 844. L117 L153 845. L117 L154 846. L117 L155 847. L117 L156 848. L117 L157 849. L117 L158 850. L117 L159 851. L118 L119 852. L118 L120 853. L118 L121 854. L118 L122 855. L118 L123 856. L118 L124 857. L118 L125 858. L118 L126 859. L118 L127 860. L118 L128 861. L118 L129 862. L118 L130 863. L118 L131 864. L118 L132 865. L118 L133 866. L118 L134 867. L118 L135 868. L118 L136 869. L118 L137 870. L118 L138 871. L118 L139 872. L118 L140 873. L118 L141 874. L118 L142 875. L118 L143 876. L118 L144 877. L118 L145 878. L118 L146 879. L118 L147 880. L118 L148 881. L118 L149 882. L118 L150 883. L118 L151 884. L118 L152 885. L118 L153 886. L118 L154 887. L118 L155 888. L118 L156 889. L118 L157 890. L118 L158 891. L118 L159 892. L119 L120 893. L119 L121 894. L119 L122 895. L119 L123 896. L119 L124 897. L119 L125 898. L119 L126 899. L119 L127 900. L119 L128 901. L119 L129 902. L119 L130 903. L119 L131 904. L119 L132 905. L119 L133 906. L119 L134 907. L119 L135 908. L119 L136 909. L119 L137 910. L119 L138 911. L119 L139 912. L119 L140 913. L119 L141 914. L119 L142 915. L119 L143 916. L119 L144 917. L119 L145 918. L119 L146 919. L119 L147 920. L119 L148 921. L119 L149 922. L119 L150 923. L119 L151 924. L119 L152 925. L119 L153 926. L119 L154 927. L119 L155 928. L119 L156 929. L119 L157 930. L119 L158 931. L119 L159 932. L120 L121 933. L120 L122 934. L120 L123 935. L120 L124 936. L120 L125 937. L120 L126 938. L120 L127 939. L120 L128 940. L120 L129 941. L120 L130 942. L120 L131 943. L120 L132 944. L120 L133 945. L120 L134 946. L120 L135 947. L120 L136 948. L120 L137 949. L120 L138 950. L120 L139 951. L120 L140 952. L120 L141 953. L120 L142 954. L120 L143 955. L120 L144 956. L120 L145 957. L120 L146 958. L120 L147 959. L120 L148 960. L120 L149 961. L120 L150 962. L120 L151 963. L120 L152 964. L120 L153 965. L120 L154 966. L120 L155 967. L120 L156 968. L120 L157 969. L120 L158 970. L120 L159 971. L121 L122 972. L121 L123 973. L121 L124 974. L121 L125 975. L121 L126 976. L121 L127 977. L121 L128 978. L121 L129 979. L121 L130 980. L121 L131 981. L121 L132 982. L121 L133 983. L121 L134 984. L121 L135 985. L121 L136 986. L121 L137 987. L121 L138 988. L121 L139 989. L121 L140 990. L121 L141 991. L121 L142 992. L121 L143 993. L121 L144 994. L121 L145 995. L121 L146 996. L121 L147 997. L121 L148 998. L121 L149 999. L121 L150 1000. L121 L151 1001. L121 L152 1002. L121 L153 1003. L121 L154 1004. L121 L155 1005. L121 L156 1006. L121 L157 1007. L121 L158 1008. L121 L159 1009. L122 L123 1010. L122 L124 1011. L122 L125 1012. L122 L126 1013. L122 L127 1014. L122 L128 1015. L122 L129 1016. L122 L130 1017. L122 L131 1018. L122 L132 1019. L122 L133 1020. L122 L134 1021. L122 L135 1022. L122 L136 1023. L122 L137 1024. L122 L138 1025. L122 L139 1026. L122 L140 1027. L122 L141 1028. L122 L142 1029. L122 L143 1030. L122 L144 1031. L122 L145 1032. L122 L146 1033. L122 L147 1034. L122 L148 1035. L122 L149 1036. L122 L150 1037. L122 L151 1038. L122 L152 1039. L122 L153 1040. L122 L154 1041. L122 L155 1042. L122 L156 1043. L122 L157 1044. L122 L158 1045. L122 L159 1046. L123 L124 1047. L123 L125 1048. L123 L126 1049. L123 L127 1050. L123 L128 1051. L123 L129 1052. L123 L130 1053. L123 L131 1054. L123 L132 1055. L123 L133 1056. L123 L134 1057. L123 L135 1058. L123 L136 1059. L123 L137 1060. L123 L138 1061. L123 L139 1062. L123 L140 1063. L123 L141 1064. L123 L142 1065. L123 L143 1066. L123 L144 1067. L123 L145 1068. L123 L146 1069. L123 L147 1070. L123 L148 1071. L123 L149 1072. L123 L150 1073. L123 L151 1074. L123 L152 1075. L123 L153 1076. L123 L154 1077. L123 L155 1078. L123 L156 1079. L123 L157 1080. L123 L158 1081. L123 L159 1082. L124 L125 1083. L124 L126 1084. L124 L127 1085. L124 L128 1086. L124 L129 1087. L124 L130 1088. L124 L131 1089. L124 L132 1090. L124 L133 1091. L124 L134 1092. L124 L135 1093. L124 L136 1094. L124 L137 1095. L124 L138 1096. L124 L139 1097. L124 L140 1098. L124 L141 1099. L124 L142 1100. L124 L143 1101. L124 L144 1102. L124 L145 1103. L124 L146 1104. L124 L147 1105. L124 L148 1106. L124 L149 1107. L124 L150 1108. L124 L151 1109. L124 L152 1110. L124 L153 1111. L124 L154 1112. L124 L155 1113. L124 L156 1114. L124 L157 1115. L124 L158 1116. L124 L159 1117. L125 L126 1118. L125 L127 1119. L125 L128 1120. L125 L129 1121. L125 L130 1122. L125 L131 1123. L125 L132 1124. L125 L133 1125. L125 L134 1126. L125 L135 1127. L125 L136 1128. L125 L137 1129. L125 L138 1130. L125 L139 1131. L125 L140 1132. L125 L141 1133. L125 L142 1134. L125 L143 1135. L125 L144 1136. L125 L145 1137. L125 L146 1138. L125 L147 1139. L125 L148 1140. L125 L149 1141. L125 L150 1142. L125 L151 1143. L125 L152 1144. L125 L153 1145. L125 L154 1146. L125 L155 1147. L125 L156 1148. L125 L157 1149. L125 L158 1150. L125 L159

In one embodiment, a first device comprising a first organic light emitting device is disclosed. The first organic light emitting device comprises an anode; a cathode; and an organic layer, disposed between the anode and the cathode, comprising a compound having the structure according Formula I, L1-Os-L2; wherein L1 and L2 are different; wherein L1 and L2 are independently selected from ligands having Formula II:

wherein Y1, Y2 and Y3 comprise C or N; wherein R3 and R4 may represent mono-, or di-substitutions, or no substitution; wherein R5 may represent mono-, di-, or tri-substitutions, or no substitution; wherein R1 and R2 are independently selected from the group consisting of alkyl and cycloalkyl; wherein R3, R4 and R5 are independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, aralkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, and combinations thereof; wherein any two adjacent substituents of R1, R2, R3, R4 and R5 are optionally joined to condense into a fused ring; and wherein the dash lines show the connection points to osmium.

In one embodiment of the first device, Y1, Y2 and Y3 comprise C. In one embodiment, Y1, Y2 and Y3 are N. In one embodiment, R1 and R2 are independently selected from the group consisting of methyl, ethyl, propyl, 1-methylethyl, butyl, 1-methylpropyl, 2-methylpropyl, pentyl, 1-methylbutyl, 2-methylbutyl, 3-methylbutyl, 1,1-dimethylpropyl, 1,2-dimethylpropyl, 2,2-dimethylpropyl, cyclopentyl, cyclohexyl, partially or fully deuterated variants thereof, and combinations thereof.

In some embodiments of the first device, L1 and L2 are independently selected from ligands having Formula III:

wherein X1, X2, X3, X4, X5, X6, X7 and X8 comprise C or N. In some embodiments, X1, X2, X3, X4, X5, X6, X7 and X8 comprise C.

In some embodiments of the first device, the ligands having Formula II are selected from the group consisting of L101 to L159 defined herein.

In some embodiments of the first device, the first emitting compound is selected from the group consisting of Compounds 1 to 1159 defined in Table 1.

The first device can be one or more of a consumer product, an organic light-emitting device, and/or a lighting panel.

The organic layer in the organic light emitting device can be an emissive layer and the compound can be an emissive dopant in some embodiments, while the compound can be a non-emissive dopant in other embodiments.

The organic layer can also include a host. In some embodiments, the host can include a metal complex. In one embodiment, the host can be a metal 8-hydroxyquinolate. The host can be a triphenylene containing benzo-fused thiophene or benzo-fused furan. Any substituent in the host can be an unfused substituent independently selected from the group consisting of CnH2n+1, OCnH2+1, OAr1, N(CnH2+1)2, N(Ar1)(Ar2), CH═CH—CnH2n+1, C≡C—CnH2+1, Ar1, Ar1—Ar2, CnH2n—Ar1, or no substitution. In the preceding substituents n can range from 1 to 10; and Ar1 and Ar2 can be independently selected from the group consisting of benzene, biphenyl, naphthalene, triphenylene, carbazole, and heteroaromatic analogs thereof.

The host can be a compound selected from the group consisting of carbazole, dibenzothiphene, dibenzofuran, dibenzoselenophene, azacarbazole, aza-dibenzothiophene, aza-dibenzofuran, and aza-dibenzoselenophene. The “aza” designation in the fragments described above, i.e., aza-dibenzofuran, aza-dibenzonethiophene, etc., means that one or more of the C—H groups in the respective fragment can be replaced by a nitrogen atom, for example, and without any limitation, azatriphenylene encompasses both dibenzo[f,h]quinoxaline and dibenzo[f,h]quinoline. One of ordinary skill in the art can readily envision other nitrogen analogs of the aza-derivatives described above, and all such analogs are intended to be encompassed by the terms as set forth herein. The host can include a metal complex. The host can be a specific compound selected from the group consisting of:

and combinations thereof.

In yet another aspect of the present disclosure, a formulation comprising the compound having a structure according to Formula I, L1-Os-L2, as defined herein, is disclosed. The formulation can include one or more components selected from the group consisting of a solvent, a host, a hole injection material, hole transport material, and an electron transport layer material, disclosed herein.

Combination with Other Materials

The materials described herein as useful for a particular layer in an organic light emitting device may be used in combination with a wide variety of other materials present in the device. For example, emissive dopants disclosed herein may be used in conjunction with a wide variety of hosts, transport layers, blocking layers, injection layers, electrodes and other layers that may be present. The materials described or referred to below are non-limiting examples of materials that may be useful in combination with the compounds disclosed herein, and one of skill in the art can readily consult the literature to identify other materials that may be useful in combination.

HIL/HTL:

A hole injecting/transporting material to be used in the present invention is not particularly limited, and any compound may be used as long as the compound is typically used as a hole injecting/transporting material. Examples of the material include, but not limit to: a phthalocyanine or porphryin derivative; an aromatic amine derivative; an indolocarbazole derivative; a polymer containing fluorohydrocarbon; a polymer with conductivity dopants; a conducting polymer, such as PEDOT/PSS; a self-assembly monomer derived from compounds such as phosphonic acid and silane derivatives; a metal oxide derivative, such as MoOx; a p-type semiconducting organic compound, such as 1,4,5,8,9,12-Hexaazatriphenylenehexacarbonitrile; a metal complex, and a cross-linkable compounds.

Examples of aromatic amine derivatives used in HIL or HTL include, but not limit to the following general structures:

Each of Ar1 to Ar9 is selected from the group consisting aromatic hydrocarbon cyclic compounds such as benzene, biphenyl, triphenyl, triphenylene, naphthalene, anthracene, phenalene, phenanthrene, fluorene, pyrene, chrysene, perylene, azulene; group consisting aromatic heterocyclic compounds such as dibenzothiophene, dibenzofuran, dibenzoselenophene, furan, thiophene, benzofuran, benzothiophene, benzoselenophene, carbazole, indolocarbazole, pyridylindole, pyrrolodipyridine, pyrazole, imidazole, triazole, oxazole, thiazole, oxadiazole, oxatriazole, dioxazole, thiadiazole, pyridine, pyridazine, pyrimidine, pyrazine, triazine, oxazine, oxathiazine, oxadiazine, indole, benzimidazole, indazole, indoxazine, benzoxazole, benzisoxazole, benzothiazole, quinoline, isoquinoline, cinnoline, quinazoline, quinoxaline, naphthyridine, phthalazine, pteridine, xanthene, acridine, phenazine, phenothiazine, phenoxazine, benzofuropyridine, furodipyridine, benzothienopyridine, thienodipyridine, benzoselenophenopyridine, and selenophenodipyridine; and group consisting 2 to 10 cyclic structural units which are groups of the same type or different types selected from the aromatic hydrocarbon cyclic group and the aromatic heterocyclic group and are bonded to each other directly or via at least one of oxygen atom, nitrogen atom, sulfur atom, silicon atom, phosphorus atom, boron atom, chain structural unit and the aliphatic cyclic group. Wherein each Ar is further substituted by a substituent selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof.

In one aspect, Ar1 to Ar9 is independently selected from the group consisting of:

wherein k is an integer from 1 to 20; X101 to X108 is C (including CH) or N; Z101 is NAr1, O, or S; Ar1 has the same group defined above.

Examples of metal complexes used in HIL or HTL include, but not limit to the following general formula:

wherein Met is a metal, which can have an atomic weight greater than 40; (Y101-Y102) is a bidentate ligand, Y101 and Y102 are independently selected from C, N, O, P, and S; L101 is an ancillary ligand; k′ is an integer value from 1 to the maximum number of ligands that may be attached to the metal; and k′+k″ is the maximum number of ligands that may be attached to the metal.

In one aspect, (Y101-Y102) is a 2-phenylpyridine derivative. In another aspect, (Y101-Y102) is a carbene ligand. In another aspect, Met is selected from Ir, Pt, Os, and Zn. In a further aspect, the metal complex has a smallest oxidation potential in solution vs. Fc+/Fc couple less than about 0.6 V.

Host:

The light emitting layer of the organic EL device of the present invention preferably contains at least a metal complex as light emitting material, and may contain a host material using the metal complex as a dopant material. Examples of the host material are not particularly limited, and any metal complexes or organic compounds may be used as long as the triplet energy of the host is larger than that of the dopant. While the Table below categorizes host materials as preferred for devices that emit various colors, any host material may be used with any dopant so long as the triplet criteria is satisfied.

Examples of metal complexes used as host are preferred to have the following general formula:

wherein Met is a metal; (Y103-Y104) is a bidentate ligand, Y103 and Y104 are independently selected from C, N, O, P, and S; L101 is an another ligand; k′ is an integer value from 1 to the maximum number of ligands that may be attached to the metal; and k′+k″ is the maximum number of ligands that may be attached to the metal.

In one aspect, the metal complexes are:

wherein (O—N) is a bidentate ligand, having metal coordinated to atoms O and N.

In another aspect, Met is selected from Ir and Pt. In a further aspect, (Y103-Y104) is a carbene ligand.

Examples of organic compounds used as host are selected from the group consisting aromatic hydrocarbon cyclic compounds such as benzene, biphenyl, triphenyl, triphenylene, naphthalene, anthracene, phenalene, phenanthrene, fluorene, pyrene, chrysene, perylene, azulene; group consisting aromatic heterocyclic compounds such as dibenzothiophene, dibenzofuran, dibenzoselenophene, furan, thiophene, benzofuran, benzothiophene, benzoselenophene, carbazole, indolocarbazole, pyridylindole, pyrrolodipyridine, pyrazole, imidazole, triazole, oxazole, thiazole, oxadiazole, oxatriazole, dioxazole, thiadiazole, pyridine, pyridazine, pyrimidine, pyrazine, triazine, oxazine, oxathiazine, oxadiazine, indole, benzimidazole, indazole, indoxazine, benzoxazole, benzisoxazole, benzothiazole, quinoline, isoquinoline, cinnoline, quinazoline, quinoxaline, naphthyridine, phthalazine, pteridine, xanthene, acridine, phenazine, phenothiazine, phenoxazine, benzofuropyridine, furodipyridine, benzothienopyridine, thienodipyridine, benzoselenophenopyridine, and selenophenodipyridine; and group consisting 2 to 10 cyclic structural units which are groups of the same type or different types selected from the aromatic hydrocarbon cyclic group and the aromatic heterocyclic group and are bonded to each other directly or via at least one of oxygen atom, nitrogen atom, sulfur atom, silicon atom, phosphorus atom, boron atom, chain structural unit and the aliphatic cyclic group. Wherein each group is further substituted by a substituent selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof.

In one aspect, host compound contains at least one of the following groups in the molecule:

wherein R101 to R107 is independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof, when it is aryl or heteroaryl, it has the similar definition as Ar's mentioned above. k is an integer from 0 to 20 or 1 to 20; k′″ is an integer from 0 to 20. X101 to X108 is selected from C (including CH) or N. Z101 and Z102 is selected from NR101, O, or S.

HBL:

A hole blocking layer (HBL) may be used to reduce the number of holes and/or excitons that leave the emissive layer. The presence of such a blocking layer in a device may result in substantially higher efficiencies as compared to a similar device lacking a blocking layer. Also, a blocking layer may be used to confine emission to a desired region of an OLED.

In one aspect, compound used in HBL contains the same molecule or the same functional groups used as host described above.

In another aspect, compound used in HBL contains at least one of the following groups in the molecule:

wherein k is an integer from 1 to 20; L101 is an another ligand, k′ is an integer from 1 to 3.

ETL:

Electron transport layer (ETL) may include a material capable of transporting electrons. Electron transport layer may be intrinsic (undoped), or doped. Doping may be used to enhance conductivity. Examples of the ETL material are not particularly limited, and any metal complexes or organic compounds may be used as long as they are typically used to transport electrons.

In one aspect, compound used in ETL contains at least one of the following groups in the molecule:

wherein R101 is selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof, when it is aryl or heteroaryl, it has the similar definition as Ar's mentioned above. Ar1 to Ar3 has the similar definition as Ar's mentioned above. k is an integer from 1 to 20. X101 to X108 is selected from C (including CH) or N.

In another aspect, the metal complexes used in ETL contains, but not limit to the following general formula:

wherein (O—N) or (N—N) is a bidentate ligand, having metal coordinated to atoms O, N or N,N; L101 is another ligand; k′ is an integer value from 1 to the maximum number of ligands that may be attached to the metal.

In any above-mentioned compounds used in each layer of the OLED device, the hydrogen atoms can be partially or fully deuterated. Thus, any specifically listed substituent, such as, without limitation, methyl, phenyl, pyridyl, etc. encompasses undeuterated, partially deuterated, and fully deuterated versions thereof. Similarly, classes of substituents such as, without limitation, alkyl, aryl, cycloalkyl, heteroaryl, etc. also encompass undeuterated, partially deuterated, and fully deuterated versions thereof.

In addition to and/or in combination with the materials disclosed herein, many hole injection materials, hole transporting materials, host materials, dopant materials, exiton/hole blocking layer materials, electron transporting and electron injecting materials may be used in an OLED. Non-limiting examples of the materials that may be used in an OLED in combination with materials disclosed herein are listed in Table 2 below. Table 2 lists non-limiting classes of materials, non-limiting examples of compounds for each class, and references that disclose the materials.

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It is understood that the various embodiments described herein are by way of example only, and are not intended to limit the scope of the invention. For example, many of the materials and structures described herein may be substituted with other materials and structures without deviating from the spirit of the invention. The present invention as claimed may therefore include variations from the particular examples and preferred embodiments described herein, as will be apparent to one of skill in the art. It is understood that various theories as to why the invention works are not intended to be limiting.

Claims

1. A method of making an osmium(II) complex having Formula I

L1-Os-L2, wherein L1 and L2 are independently a biscarbene tridentate ligand, wherein L1 and L2 can be same or different, said method comprising:
(a) reacting a precursor of ligand L1 with an osmium precursor to form an intermediate product, wherein the osmium precursor having the formula OsHx(PR3)y, wherein x is an integer from 2 to 6 and y is an integer from 2 to 5, and R is selected from the group consisting of aryl, alkyl and cycloalkyl; and
(b) reacting a precursor of ligand L2 with said intermediate product.

2. The method of claim 1, wherein L1 and L2 are monoanionic ligands.

3. The method of claim 1, wherein L1 and L2 are independently selected from ligands having Formula II:

wherein Y1, Y2 and Y3 comprise C or N;
wherein R3 and R4 may represent mono-, or di-substitutions, or no substitution;
wherein R5 may represent mono-, di-, or tri-substitutions, or no substitution;
wherein R1, R2, R3, R4 and R5 are independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof;
wherein any two adjacent substituents of R1, R2, R3, R4 and R5 are optionally joined to form a ring; and
wherein the dash lines show the connection points to osmium.

4. The method of claim 3, wherein Y1, Y2 and Y3 comprise C.

5. The method of claim 3, wherein Y1 and Y3 comprise C, and Y2 is N.

6. The method of claim 3, wherein Y1 and Y3 are N, and Y2 comprise C.

7. The method of claim 3, wherein R1 and R2 are independently selected from the group consisting of alkyl, cycloalkyl, aryl, heteroaryl, and partially or fully deuterated variants thereof.

8. The method of claim 3, wherein R1 and R2 are independently selected from the group consisting of methyl, ethyl, propyl, 1-methylethyl, butyl, 1-methylpropyl, 2-methylpropyl, pentyl, 1-methylbutyl, 2-methylbutyl, 3-methylbutyl, 1,1-dimethylpropyl, 1,2-dimethylpropyl, 2,2-dimethylpropyl, cyclopentyl, cyclohexyl, partially or fully deuterated variants thereof, and combinations thereof.

9. The method of claim 1, wherein R is selected from the group consisting of methyl, ethyl, propyl, 1-methylethyl, butyl, 1-methylpropyl, 2-methylpropyl, 1,1-dimethylethyl, cyclohexyl, phenyl, 2,6-dimethylphenyl, and 2-methylphenyl.

10. The method of claim 1, wherein R is 1-methylethyl.

11. The method of claim 3, wherein the ligands having Formula II are selected from the group consisting of:

12. A compound having a structure according to Formula I:

L1-Os-L2
wherein L1 and L2 are different;
wherein L1 and L2 are independently selected from ligands having Formula II:
wherein Y1, Y2 and Y3 comprise C or N;
wherein R3 and R4 may represent mono-, or di-substitutions, or no substitution;
wherein R5 may represent mono-, di-, or tri-substitutions, or no substitution;
wherein R1 and R2 are independently selected from the group consisting of alkyl and cycloalkyl;
wherein R3, R4 and R5 are independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, aralkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, and combinations thereof;
wherein any two adjacent substituents of R1, R2, R3, R4 and R5 are optionally joined to condense into a fused ring; and
wherein the dash lines show the connection points to osmium.

13. The compound of claim 12, wherein Y1, Y2 and Y3 comprise C.

14. The compound of claim 12, wherein Y1 and Y3 comprise C, and Y2 is N.

15. The compound of claim 12, wherein Y1 and Y3 are N, and Y2 comprise C.

16. The compound of claim 12, wherein R1 and R2 are independently selected from the group consisting of alkyl, cycloalkyl, aryl, heteroaryl, and partially or fully deuterated variants thereof.

17. The compound of claim 12, wherein R1 and R2 are independently selected from the group consisting of methyl, ethyl, propyl, 1-methylethyl, butyl, 1-methylpropyl, 2-methylpropyl, pentyl, 1-methylbutyl, 2-methylbutyl, 3-methylbutyl, 1,1-dimethylpropyl, 1,2-dimethylpropyl, 2,2-dimethylpropyl, cyclopentyl, cyclohexyl, partially or fully deuterated variants thereof, and combinations thereof.

18. The compound of claim 12, wherein L1 and L2 are independently selected from ligands having Formula III:

wherein X1, X2, X3, X4, X5, X6, X7 and X8 comprise C or N.

19. The compound of claim 18, wherein X1, X2, X3, X4, X5, X6, X7 and X8 comprise C.

20. The compound of claim 12, wherein the ligands having Formula II are selected from the group consisting of:

21. The compound of claim 12, wherein the compound is selected from the group consisting of Compounds 1 to 1150 defined in the table below: Compound Number L1 L2 1. L101 L102 2. L101 L103 3. L101 L104 4. L101 L105 5. L101 L106 6. L101 L107 7. L101 L108 8. L101 L109 9. L101 L110 10. L101 L111 11. L101 L112 12. L101 L113 13. L101 L114 14. L101 L115 15. L101 L116 16. L101 L117 17. L101 L118 18. L101 L119 19. L101 L120 20. L101 L121 21. L101 L122 22. L101 L123 23. L101 L124 24. L101 L125 25. L101 L126 26. L101 L127 27. L101 L128 28. L101 L129 29. L101 L130 30. L101 L131 31. L101 L132 32. L101 L133 33. L101 L134 34. L101 L135 35. L101 L136 36. L101 L137 37. L101 L138 38. L101 L139 39. L101 L140 40. L101 L141 41. L101 L142 42. L101 L143 43. L101 L144 44. L101 L145 45. L101 L146 46. L101 L147 47. L101 L148 48. L101 L149 49. L101 L150 50. L101 L151 51. L101 L152 52. L101 L153 53. L101 L154 54. L101 L155 55. L101 L156 56. L101 L157 57. L101 L158 58. L101 L159 59. L102 L103 60. L102 L104 61. L102 L105 62. L102 L106 63. L102 L107 64. L102 L108 65. L102 L109 66. L102 L110 67. L102 L111 68. L102 L112 69. L102 L113 70. L102 L114 71. L102 L115 72. L102 L116 73. L102 L117 74. L102 L118 75. L102 L119 76. L102 L120 77. L102 L121 78. L102 L122 79. L102 L123 80. L102 L124 81. L102 L125 82. L102 L126 83. L102 L127 84. L102 L128 85. L102 L129 86. L102 L130 87. L102 L131 88. L102 L132 89. L102 L133 90. L102 L134 91. L102 L135 92. L102 L136 93. L102 L137 94. L102 L138 95. L102 L139 96. L102 L140 97. L102 L141 98. L102 L142 99. L102 L143 100. L102 L144 101. L102 L145 102. L102 L146 103. L102 L147 104. L102 L148 105. L102 L149 106. L102 L150 107. L102 L151 108. L102 L152 109. L102 L153 110. L102 L154 111. L102 L155 112. L102 L156 113. L102 L157 114. L102 L158 115. L102 L159 116. L103 L104 117. L103 L105 118. L103 L106 119. L103 L107 120. L103 L108 121. L103 L109 122. L103 L110 123. L103 L111 124. L103 L112 125. L103 L113 126. L103 L114 127. L103 L115 128. L103 L116 129. L103 L117 130. L103 L118 131. L103 L119 132. L103 L120 133. L103 L121 134. L103 L122 135. L103 L123 136. L103 L124 137. L103 L125 138. L103 L126 139. L103 L127 140. L103 L128 141. L103 L129 142. L103 L130 143. L103 L131 144. L103 L132 145. L103 L133 146. L103 L134 147. L103 L135 148. L103 L136 149. L103 L137 150. L103 L138 151. L103 L139 152. L103 L140 153. L103 L141 154. L103 L142 155. L103 L143 156. L103 L144 157. L103 L145 158. L103 L146 159. L103 L147 160. L103 L148 161. L103 L149 162. L103 L150 163. L103 L151 164. L103 L152 165. L103 L153 166. L103 L154 167. L103 L155 168. L103 L156 169. L103 L157 170. L103 L158 171. L103 L159 172. L104 L105 173. L104 L106 174. L104 L107 175. L104 L108 176. L104 L109 177. L104 L110 178. L104 L111 179. L104 L112 180. L104 L113 181. L104 L114 182. L104 L115 183. L104 L116 184. L104 L117 185. L104 L118 186. L104 L119 187. L104 L120 188. L104 L121 189. L104 L122 190. L104 L123 191. L104 L124 192. L104 L125 193. L104 L126 194. L104 L127 195. L104 L128 196. L104 L129 197. L104 L130 198. L104 L131 199. L104 L132 200. L104 L133 201. L104 L134 202. L104 L135 203. L104 L136 204. L104 L137 205. L104 L138 206. L104 L139 207. L104 L140 208. L104 L141 209. L104 L142 210. L104 L143 211. L104 L144 212. L104 L145 213. L104 L146 214. L104 L147 215. L104 L148 216. L104 L149 217. L104 L150 218. L104 L151 219. L104 L152 220. L104 L153 221. L104 L154 222. L104 L155 223. L104 L156 224. L104 L157 225. L104 L158 226. L104 L159 227. L105 L106 228. L105 L107 229. L105 L108 230. L105 L109 231. L105 L110 232. L105 L111 233. L105 L112 234. L105 L113 235. L105 L114 236. L105 L115 237. L105 L116 238. L105 L117 239. L105 L118 240. L105 L119 241. L105 L120 242. L105 L121 243. L105 L122 244. L105 L123 245. L105 L124 246. L105 L125 247. L105 L126 248. L105 L127 249. L105 L128 250. L105 L129 251. L105 L130 252. L105 L131 253. L105 L132 254. L105 L133 255. L105 L134 256. L105 L135 257. L105 L136 258. L105 L137 259. L105 L138 260. L105 L139 261. L105 L140 262. L105 L141 263. L105 L142 264. L105 L143 265. L105 L144 266. L105 L145 267. L105 L146 268. L105 L147 269. L105 L148 270. L105 L149 271. L105 L150 272. L105 L151 273. L105 L152 274. L105 L153 275. L105 L154 276. L105 L155 277. L105 L156 278. L105 L157 279. L105 L158 280. L105 L159 281. L106 L107 282. L106 L108 283. L106 L109 284. L106 L110 285. L106 L111 286. L106 L112 287. L106 L113 288. L106 L114 289. L106 L115 290. L106 L116 291. L106 L117 292. L106 L118 293. L106 L119 294. L106 L120 295. L106 L121 296. L106 L122 297. L106 L123 298. L106 L124 299. L106 L125 300. L106 L126 301. L106 L127 302. L106 L128 303. L106 L129 304. L106 L130 305. L106 L131 306. L106 L132 307. L106 L133 308. L106 L134 309. L106 L135 310. L106 L136 311. L106 L137 312. L106 L138 313. L106 L139 314. L106 L140 315. L106 L141 316. L106 L142 317. L106 L143 318. L106 L144 319. L106 L145 320. L106 L146 321. L106 L147 322. L106 L148 323. L106 L149 324. L106 L150 325. L106 L151 326. L106 L152 327. L106 L153 328. L106 L154 329. L106 L155 330. L106 L156 331. L106 L157 332. L106 L158 333. L106 L159 334. L107 L108 335. L107 L109 336. L107 L110 337. L107 L111 338. L107 L112 339. L107 L113 340. L107 L114 341. L107 L115 342. L107 L116 343. L107 L117 344. L107 L118 345. L107 L119 346. L107 L120 347. L107 L121 348. L107 L122 349. L107 L123 350. L107 L124 351. L107 L125 352. L107 L126 353. L107 L127 354. L107 L128 355. L107 L129 356. L107 L130 357. L107 L131 358. L107 L132 359. L107 L133 360. L107 L134 361. L107 L135 362. L107 L136 363. L107 L137 364. L107 L138 365. L107 L139 366. L107 L140 367. L107 L141 368. L107 L142 369. L107 L143 370. L107 L144 371. L107 L145 372. L107 L146 373. L107 L147 374. L107 L148 375. L107 L149 376. L107 L150 377. L107 L151 378. L107 L152 379. L107 L153 380. L107 L154 381. L107 L155 382. L107 L156 383. L107 L157 384. L107 L158 385. L107 L159 386. L108 L109 387. L108 L110 388. L108 L111 389. L108 L112 390. L108 L113 391. L108 L114 392. L108 L115 393. L108 L116 394. L108 L117 395. L108 L118 396. L108 L119 397. L108 L120 398. L108 L121 399. L108 L122 400. L108 L123 401. L108 L124 402. L108 L125 403. L108 L126 404. L108 L127 405. L108 L128 406. L108 L129 407. L108 L130 408. L108 L131 409. L108 L132 410. L108 L133 411. L108 L134 412. L108 L135 413. L108 L136 414. L108 L137 415. L108 L138 416. L108 L139 417. L108 L140 418. L108 L141 419. L108 L142 420. L108 L143 421. L108 L144 422. L108 L145 423. L108 L146 424. L108 L147 425. L108 L148 426. L108 L149 427. L108 L150 428. L108 L151 429. L108 L152 430. L108 L153 431. L108 L154 432. L108 L155 433. L108 L156 434. L108 L157 435. L108 L158 436. L108 L159 437. L109 L110 438. L109 L111 439. L109 L112 440. L109 L113 441. L109 L114 442. L109 L115 443. L109 L116 444. L109 L117 445. L109 L118 446. L109 L119 447. L109 L120 448. L109 L121 449. L109 L122 450. L109 L123 451. L109 L124 452. L109 L125 453. L109 L126 454. L109 L127 455. L109 L128 456. L109 L129 457. L109 L130 458. L109 L131 459. L109 L132 460. L109 L133 461. L109 L134 462. L109 L135 463. L109 L136 464. L109 L137 465. L109 L138 466. L109 L139 467. L109 L140 468. L109 L141 469. L109 L142 470. L109 L143 471. L109 L144 472. L109 L145 473. L109 L146 474. L109 L147 475. L109 L148 476. L109 L149 477. L109 L150 478. L109 L151 479. L109 L152 480. L109 L153 481. L109 L154 482. L109 L155 483. L109 L156 484. L109 L157 485. L109 L158 486. L109 L159 487. L110 L111 488. L110 L112 489. L110 L113 490. L110 L114 491. L110 L115 492. L110 L116 493. L110 L117 494. L110 L118 495. L110 L119 496. L110 L120 497. L110 L121 498. L110 L122 499. L110 L123 500. L110 L124 501. L110 L125 502. L110 L126 503. L110 L127 504. L110 L128 505. L110 L129 506. L110 L130 507. L110 L131 508. L110 L132 509. L110 L133 510. L110 L134 511. L110 L135 512. L110 L136 513. L110 L137 514. L110 L138 515. L110 L139 516. L110 L140 517. L110 L141 518. L110 L142 519. L110 L143 520. L110 L144 521. L110 L145 522. L110 L146 523. L110 L147 524. L110 L148 525. L110 L149 526. L110 L150 527. L110 L151 528. L110 L152 529. L110 L153 530. L110 L154 531. L110 L155 532. L110 L156 533. L110 L157 534. L110 L158 535. L110 L159 536. L111 L112 537. L111 L113 538. L111 L114 539. L111 L115 540. L111 L116 541. L111 L117 542. L111 L118 543. L111 L119 544. L111 L120 545. L111 L121 546. L111 L122 547. L111 L123 548. L111 L124 549. L111 L125 550. L111 L126 551. L111 L127 552. L111 L128 553. L111 L129 554. L111 L130 555. L111 L131 556. L111 L132 557. L111 L133 558. L111 L134 559. L111 L135 560. L111 L136 561. L111 L137 562. L111 L138 563. L111 L139 564. L111 L140 565. L111 L141 566. L111 L142 567. L111 L143 568. L111 L144 569. L111 L145 570. L111 L146 571. L111 L147 572. L111 L148 573. L111 L149 574. L111 L150 575. L111 L151 576. L111 L152 577. L111 L153 578. L111 L154 579. L111 L155 580. L111 L156 581. L111 L157 582. L111 L158 583. L111 L159 584. L112 L113 585. L112 L114 586. L112 L115 587. L112 L116 588. L112 L117 589. L112 L118 590. L112 L119 591. L112 L120 592. L112 L121 593. L112 L122 594. L112 L123 595. L112 L124 596. L112 L125 597. L112 L126 598. L112 L127 599. L112 L128 600. L112 L129 601. L112 L130 602. L112 L131 603. L112 L132 604. L112 L133 605. L112 L134 606. L112 L135 607. L112 L136 608. L112 L137 609. L112 L138 610. L112 L139 611. L112 L140 612. L112 L141 613. L112 L142 614. L112 L143 615. L112 L144 616. L112 L145 617. L112 L146 618. L112 L147 619. L112 L148 620. L112 L149 621. L112 L150 622. L112 L151 623. L112 L152 624. L112 L153 625. L112 L154 626. L112 L155 627. L112 L156 628. L112 L157 629. L112 L158 630. L112 L159 631. L113 L114 632. L113 L115 633. L113 L116 634. L113 L117 635. L113 L118 636. L113 L119 637. L113 L120 638. L113 L121 639. L113 L122 640. L113 L123 641. L113 L124 642. L113 L125 643. L113 L126 644. L113 L127 645. L113 L128 646. L113 L129 647. L113 L130 648. L113 L131 649. L113 L132 650. L113 L133 651. L113 L134 652. L113 L135 653. L113 L136 654. L113 L137 655. L113 L138 656. L113 L139 657. L113 L140 658. L113 L141 659. L113 L142 660. L113 L143 661. L113 L144 662. L113 L145 663. L113 L146 664. L113 L147 665. L113 L148 666. L113 L149 667. L113 L150 668. L113 L151 669. L113 L152 670. L113 L153 671. L113 L154 672. L113 L155 673. L113 L156 674. L113 L157 675. L113 L158 676. L113 L159 677. L114 L115 678. L114 L116 679. L114 L117 680. L114 L118 681. L114 L119 682. L114 L120 683. L114 L121 684. L114 L122 685. L114 L123 686. L114 L124 687. L114 L125 688. L114 L126 689. L114 L127 690. L114 L128 691. L114 L129 692. L114 L130 693. L114 L131 694. L114 L132 695. L114 L133 696. L114 L134 697. L114 L135 698. L114 L136 699. L114 L137 700. L114 L138 701. L114 L139 702. L114 L140 703. L114 L141 704. L114 L142 705. L114 L143 706. L114 L144 707. L114 L145 708. L114 L146 709. L114 L147 710. L114 L148 711. L114 L149 712. L114 L150 713. L114 L151 714. L114 L152 715. L114 L153 716. L114 L154 717. L114 L155 718. L114 L156 719. L114 L157 720. L114 L158 721. L114 L159 722. L115 L116 723. L115 L117 724. L115 L118 725. L115 L119 726. L115 L120 727. L115 L121 728. L115 L122 729. L115 L123 730. L115 L124 731. L115 L125 732. L115 L126 733. L115 L127 734. L115 L128 735. L115 L129 736. L115 L130 737. L115 L131 738. L115 L132 739. L115 L133 740. L115 L134 741. L115 L135 742. L115 L136 743. L115 L137 744. L115 L138 745. L115 L139 746. L115 L140 747. L115 L141 748. L115 L142 749. L115 L143 750. L115 L144 751. L115 L145 752. L115 L146 753. L115 L147 754. L115 L148 755. L115 L149 756. L115 L150 757. L115 L151 758. L115 L152 759. L115 L153 760. L115 L154 761. L115 L155 762. L115 L156 763. L115 L157 764. L115 L158 765. L115 L159 766. L116 L117 767. L116 L118 768. L116 L119 769. L116 L120 770. L116 L121 771. L116 L122 772. L116 L123 773. L116 L124 774. L116 L125 775. L116 L126 776. L116 L127 777. L116 L128 778. L116 L129 779. L116 L130 780. L116 L131 781. L116 L132 782. L116 L133 783. L116 L134 784. L116 L135 785. L116 L136 786. L116 L137 787. L116 L138 788. L116 L139 789. L116 L140 790. L116 L141 791. L116 L142 792. L116 L143 793. L116 L144 794. L116 L145 795. L116 L146 796. L116 L147 797. L116 L148 798. L116 L149 799. L116 L150 800. L116 L151 801. L116 L152 802. L116 L153 803. L116 L154 804. L116 L155 805. L116 L156 806. L116 L157 807. L116 L158 808. L116 L159 809. L117 L118 810. L117 L119 811. L117 L120 812. L117 L121 813. L117 L122 814. L117 L123 815. L117 L124 816. L117 L125 817. L117 L126 818. L117 L127 819. L117 L128 820. L117 L129 821. L117 L130 822. L117 L131 823. L117 L132 824. L117 L133 825. L117 L134 826. L117 L135 827. L117 L136 828. L117 L137 829. L117 L138 830. L117 L139 831. L117 L140 832. L117 L141 833. L117 L142 834. L117 L143 835. L117 L144 836. L117 L145 837. L117 L146 838. L117 L147 839. L117 L148 840. L117 L149 841. L117 L150 842. L117 L151 843. L117 L152 844. L117 L153 845. L117 L154 846. L117 L155 847. L117 L156 848. L117 L157 849. L117 L158 850. L117 L159 851. L118 L119 852. L118 L120 853. L118 L121 854. L118 L122 855. L118 L123 856. L118 L124 857. L118 L125 858. L118 L126 859. L118 L127 860. L118 L128 861. L118 L129 862. L118 L130 863. L118 L131 864. L118 L132 865. L118 L133 866. L118 L134 867. L118 L135 868. L118 L136 869. L118 L137 870. L118 L138 871. L118 L139 872. L118 L140 873. L118 L141 874. L118 L142 875. L118 L143 876. L118 L144 877. L118 L145 878. L118 L146 879. L118 L147 880. L118 L148 881. L118 L149 882. L118 L150 883. L118 L151 884. L118 L152 885. L118 L153 886. L118 L154 887. L118 L155 888. L118 L156 889. L118 L157 890. L118 L158 891. L118 L159 892. L119 L120 893. L119 L121 894. L119 L122 895. L119 L123 896. L119 L124 897. L119 L125 898. L119 L126 899. L119 L127 900. L119 L128 901. L119 L129 902. L119 L130 903. L119 L131 904. L119 L132 905. L119 L133 906. L119 L134 907. L119 L135 908. L119 L136 909. L119 L137 910. L119 L138 911. L119 L139 912. L119 L140 913. L119 L141 914. L119 L142 915. L119 L143 916. L119 L144 917. L119 L145 918. L119 L146 919. L119 L147 920. L119 L148 921. L119 L149 922. L119 L150 923. L119 L151 924. L119 L152 925. L119 L153 926. L119 L154 927. L119 L155 928. L119 L156 929. L119 L157 930. L119 L158 931. L119 L159 932. L120 L121 933. L120 L122 934. L120 L123 935. L120 L124 936. L120 L125 937. L120 L126 938. L120 L127 939. L120 L128 940. L120 L129 941. L120 L130 942. L120 L131 943. L120 L132 944. L120 L133 945. L120 L134 946. L120 L135 947. L120 L136 948. L120 L137 949. L120 L138 950. L120 L139 951. L120 L140 952. L120 L141 953. L120 L142 954. L120 L143 955. L120 L144 956. L120 L145 957. L120 L146 958. L120 L147 959. L120 L148 960. L120 L149 961. L120 L150 962. L120 L151 963. L120 L152 964. L120 L153 965. L120 L154 966. L120 L155 967. L120 L156 968. L120 L157 969. L120 L158 970. L120 L159 971. L121 L122 972. L121 L123 973. L121 L124 974. L121 L125 975. L121 L126 976. L121 L127 977. L121 L128 978. L121 L129 979. L121 L130 980. L121 L131 981. L121 L132 982. L121 L133 983. L121 L134 984. L121 L135 985. L121 L136 986. L121 L137 987. L121 L138 988. L121 L139 989. L121 L140 990. L121 L141 991. L121 L142 992. L121 L143 993. L121 L144 994. L121 L145 995. L121 L146 996. L121 L147 997. L121 L148 998. L121 L149 999. L121 L150 1000. L121 L151 1001. L121 L152 1002. L121 L153 1003. L121 L154 1004. L121 L155 1005. L121 L156 1006. L121 L157 1007. L121 L158 1008. L121 L159 1009. L122 L123 1010. L122 L124 1011. L122 L125 1012. L122 L126 1013. L122 L127 1014. L122 L128 1015. L122 L129 1016. L122 L130 1017. L122 L131 1018. L122 L132 1019. L122 L133 1020. L122 L134 1021. L122 L135 1022. L122 L136 1023. L122 L137 1024. L122 L138 1025. L122 L139 1026. L122 L140 1027. L122 L141 1028. L122 L142 1029. L122 L143 1030. L122 L144 1031. L122 L145 1032. L122 L146 1033. L122 L147 1034. L122 L148 1035. L122 L149 1036. L122 L150 1037. L122 L151 1038. L122 L152 1039. L122 L153 1040. L122 L154 1041. L122 L155 1042. L122 L156 1043. L122 L157 1044. L122 L158 1045. L122 L159 1046. L123 L124 1047. L123 L125 1048. L123 L126 1049. L123 L127 1050. L123 L128 1051. L123 L129 1052. L123 L130 1053. L123 L131 1054. L123 L132 1055. L123 L133 1056. L123 L134 1057. L123 L135 1058. L123 L136 1059. L123 L137 1060. L123 L138 1061. L123 L139 1062. L123 L140 1063. L123 L141 1064. L123 L142 1065. L123 L143 1066. L123 L144 1067. L123 L145 1068. L123 L146 1069. L123 L147 1070. L123 L148 1071. L123 L149 1072. L123 L150 1073. L123 L151 1074. L123 L152 1075. L123 L153 1076. L123 L154 1077. L123 L155 1078. L123 L156 1079. L123 L157 1080. L123 L158 1081. L123 L159 1082. L124 L125 1083. L124 L126 1084. L124 L127 1085. L124 L128 1086. L124 L129 1087. L124 L130 1088. L124 L131 1089. L124 L132 1090. L124 L133 1091. L124 L134 1092. L124 L135 1093. L124 L136 1094. L124 L137 1095. L124 L138 1096. L124 L139 1097. L124 L140 1098. L124 L141 1099. L124 L142 1100. L124 L143 1101. L124 L144 1102. L124 L145 1103. L124 L146 1104. L124 L147 1105. L124 L148 1106. L124 L149 1107. L124 L150 1108. L124 L151 1109. L124 L152 1110. L124 L153 1111. L124 L154 1112. L124 L155 1113. L124 L156 1114. L124 L157 1115. L124 L158 1116. L124 L159 1117. L125 L126 1118. L125 L127 1119. L125 L128 1120. L125 L129 1121. L125 L130 1122. L125 L131 1123. L125 L132 1124. L125 L133 1125. L125 L134 1126. L125 L135 1127. L125 L136 1128. L125 L137 1129. L125 L138 1130. L125 L139 1131. L125 L140 1132. L125 L141 1133. L125 L142 1134. L125 L143 1135. L125 L144 1136. L125 L145 1137. L125 L146 1138. L125 L147 1139. L125 L148 1140. L125 L149 1141. L125 L150 1142. L125 L151 1143. L125 L152 1144. L125 L153 1145. L125 L154 1146. L125 L155 1147. L125 L156 1148. L125 L157 1149. L125 L158 1150. L125 L159

22. A first device comprising a first organic light emitting device, the first organic light emitting device comprising:

an anode;
a cathode; and
an organic layer, disposed between the anode and the cathode, comprising a compound having the structure according Formula I L1-Os-L2;
wherein L1 and L2 are different;
wherein L1 and L2 are independently selected from ligands having Formula II:
wherein Y1, Y2 and Y3 comprise C or N;
wherein R3 and R4 may represent mono-, or di-substitutions, or no substitution;
wherein R5 may represent mono-, di-, or tri-substitutions, or no substitution;
wherein R1 and R2 are independently selected from the group consisting of alkyl and cycloalkyl;
wherein R3, R4 and R5 are independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, aralkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, and combinations thereof;
wherein any two adjacent substituents of R1, R2, R3, R4 and R5 are optionally joined to condense into a fused ring; and
wherein the dash lines show the connection points to osmium.

23. The first device of claim 22, wherein Y1, Y2 and Y3 comprise C.

24. The first device of claim 22, wherein Y1, Y2 and Y3 are N.

25. The first device of claim 22, wherein R1 and R2 are independently selected from the group consisting of methyl, ethyl, propyl, 1-methylethyl, butyl, 1-methylpropyl, 2-methylpropyl, pentyl, 1-methylbutyl, 2-methylbutyl, 3-methylbutyl, 1,1-dimethylpropyl, 1,2-dimethylpropyl, 2,2-dimethylpropyl, cyclopentyl, cyclohexyl, partially or fully deuterated variants thereof, and combinations thereof.

26. The first device of claim 22, wherein L1 and L2 are independently selected from ligands having Formula III:

wherein X1, X2, X3, X4, X5, X6, X7 and X8 comprise C or N.

27. The first device of claim 26, wherein X1, X2, X3, X4, X5, X6, X7 and X8 comprise C.

28. The first device of claim 22, wherein the ligands having Formula II are selected from the group consisting of:

29. The first device of claim 22, wherein the first emitting compound is selected from the group consisting of Compounds 1 to 1150 defined in the table below: Compound Number L1 L2 1. L101 L102 2. L101 L103 3. L101 L104 4. L101 L105 5. L101 L106 6. L101 L107 7. L101 L108 8. L101 L109 9. L101 L110 10. L101 L111 11. L101 L112 12. L101 L113 13. L101 L114 14. L101 L115 15. L101 L116 16. L101 L117 17. L101 L118 18. L101 L119 19. L101 L120 20. L101 L121 21. L101 L122 22. L101 L123 23. L101 L124 24. L101 L125 25. L101 L126 26. L101 L127 27. L101 L128 28. L101 L129 29. L101 L130 30. L101 L131 31. L101 L132 32. L101 L133 33. L101 L134 34. L101 L135 35. L101 L136 36. L101 L137 37. L101 L138 38. L101 L139 39. L101 L140 40. L101 L141 41. L101 L142 42. L101 L143 43. L101 L144 44. L101 L145 45. L101 L146 46. L101 L147 47. L101 L148 48. L101 L149 49. L101 L150 50. L101 L151 51. L101 L152 52. L101 L153 53. L101 L154 54. L101 L155 55. L101 L156 56. L101 L157 57. L101 L158 58. L101 L159 59. L102 L103 60. L102 L104 61. L102 L105 62. L102 L106 63. L102 L107 64. L102 L108 65. L102 L109 66. L102 L110 67. L102 L111 68. L102 L112 69. L102 L113 70. L102 L114 71. L102 L115 72. L102 L116 73. L102 L117 74. L102 L118 75. L102 L119 76. L102 L120 77. L102 L121 78. L102 L122 79. L102 L123 80. L102 L124 81. L102 L125 82. L102 L126 83. L102 L127 84. L102 L128 85. L102 L129 86. L102 L130 87. L102 L131 88. L102 L132 89. L102 L133 90. L102 L134 91. L102 L135 92. L102 L136 93. L102 L137 94. L102 L138 95. L102 L139 96. L102 L140 97. L102 L141 98. L102 L142 99. L102 L143 100. L102 L144 101. L102 L145 102. L102 L146 103. L102 L147 104. L102 L148 105. L102 L149 106. L102 L150 107. L102 L151 108. L102 L152 109. L102 L153 110. L102 L154 111. L102 L155 112. L102 L156 113. L102 L157 114. L102 L158 115. L102 L159 116. L103 L104 117. L103 L105 118. L103 L106 119. L103 L107 120. L103 L108 121. L103 L109 122. L103 L110 123. L103 L111 124. L103 L112 125. L103 L113 126. L103 L114 127. L103 L115 128. L103 L116 129. L103 L117 130. L103 L118 131. L103 L119 132. L103 L120 133. L103 L121 134. L103 L122 135. L103 L123 136. L103 L124 137. L103 L125 138. L103 L126 139. L103 L127 140. L103 L128 141. L103 L129 142. L103 L130 143. L103 L131 144. L103 L132 145. L103 L133 146. L103 L134 147. L103 L135 148. L103 L136 149. L103 L137 150. L103 L138 151. L103 L139 152. L103 L140 153. L103 L141 154. L103 L142 155. L103 L143 156. L103 L144 157. L103 L145 158. L103 L146 159. L103 L147 160. L103 L148 161. L103 L149 162. L103 L150 163. L103 L151 164. L103 L152 165. L103 L153 166. L103 L154 167. L103 L155 168. L103 L156 169. L103 L157 170. L103 L158 171. L103 L159 172. L104 L105 173. L104 L106 174. L104 L107 175. L104 L108 176. L104 L109 177. L104 L110 178. L104 L111 179. L104 L112 180. L104 L113 181. L104 L114 182. L104 L115 183. L104 L116 184. L104 L117 185. L104 L118 186. L104 L119 187. L104 L120 188. L104 L121 189. L104 L122 190. L104 L123 191. L104 L124 192. L104 L125 193. L104 L126 194. L104 L127 195. L104 L128 196. L104 L129 197. L104 L130 198. L104 L131 199. L104 L132 200. L104 L133 201. L104 L134 202. L104 L135 203. L104 L136 204. L104 L137 205. L104 L138 206. L104 L139 207. L104 L140 208. L104 L141 209. L104 L142 210. L104 L143 211. L104 L144 212. L104 L145 213. L104 L146 214. L104 L147 215. L104 L148 216. L104 L149 217. L104 L150 218. L104 L151 219. L104 L152 220. L104 L153 221. L104 L154 222. L104 L155 223. L104 L156 224. L104 L157 225. L104 L158 226. L104 L159 227. L105 L106 228. L105 L107 229. L105 L108 230. L105 L109 231. L105 L110 232. L105 L111 233. L105 L112 234. L105 L113 235. L105 L114 236. L105 L115 237. L105 L116 238. L105 L117 239. L105 L118 240. L105 L119 241. L105 L120 242. L105 L121 243. L105 L122 244. L105 L123 245. L105 L124 246. L105 L125 247. L105 L126 248. L105 L127 249. L105 L128 250. L105 L129 251. L105 L130 252. L105 L131 253. L105 L132 254. L105 L133 255. L105 L134 256. L105 L135 257. L105 L136 258. L105 L137 259. L105 L138 260. L105 L139 261. L105 L140 262. L105 L141 263. L105 L142 264. L105 L143 265. L105 L144 266. L105 L145 267. L105 L146 268. L105 L147 269. L105 L148 270. L105 L149 271. L105 L150 272. L105 L151 273. L105 L152 274. L105 L153 275. L105 L154 276. L105 L155 277. L105 L156 278. L105 L157 279. L105 L158 280. L105 L159 281. L106 L107 282. L106 L108 283. L106 L109 284. L106 L110 285. L106 L111 286. L106 L112 287. L106 L113 288. L106 L114 289. L106 L115 290. L106 L116 291. L106 L117 292. L106 L118 293. L106 L119 294. L106 L120 295. L106 L121 296. L106 L122 297. L106 L123 298. L106 L124 299. L106 L125 300. L106 L126 301. L106 L127 302. L106 L128 303. L106 L129 304. L106 L130 305. L106 L131 306. L106 L132 307. L106 L133 308. L106 L134 309. L106 L135 310. L106 L136 311. L106 L137 312. L106 L138 313. L106 L139 314. L106 L140 315. L106 L141 316. L106 L142 317. L106 L143 318. L106 L144 319. L106 L145 320. L106 L146 321. L106 L147 322. L106 L148 323. L106 L149 324. L106 L150 325. L106 L151 326. L106 L152 327. L106 L153 328. L106 L154 329. L106 L155 330. L106 L156 331. L106 L157 332. L106 L158 333. L106 L159 334. L107 L108 335. L107 L109 336. L107 L110 337. L107 L111 338. L107 L112 339. L107 L113 340. L107 L114 341. L107 L115 342. L107 L116 343. L107 L117 344. L107 L118 345. L107 L119 346. L107 L120 347. L107 L121 348. L107 L122 349. L107 L123 350. L107 L124 351. L107 L125 352. L107 L126 353. L107 L127 354. L107 L128 355. L107 L129 356. L107 L130 357. L107 L131 358. L107 L132 359. L107 L133 360. L107 L134 361. L107 L135 362. L107 L136 363. L107 L137 364. L107 L138 365. L107 L139 366. L107 L140 367. L107 L141 368. L107 L142 369. L107 L143 370. L107 L144 371. L107 L145 372. L107 L146 373. L107 L147 374. L107 L148 375. L107 L149 376. L107 L150 377. L107 L151 378. L107 L152 379. L107 L153 380. L107 L154 381. L107 L155 382. L107 L156 383. L107 L157 384. L107 L158 385. L107 L159 386. L108 L109 387. L108 L110 388. L108 L111 389. L108 L112 390. L108 L113 391. L108 L114 392. L108 L115 393. L108 L116 394. L108 L117 395. L108 L118 396. L108 L119 397. L108 L120 398. L108 L121 399. L108 L122 400. L108 L123 401. L108 L124 402. L108 L125 403. L108 L126 404. L108 L127 405. L108 L128 406. L108 L129 407. L108 L130 408. L108 L131 409. L108 L132 410. L108 L133 411. L108 L134 412. L108 L135 413. L108 L136 414. L108 L137 415. L108 L138 416. L108 L139 417. L108 L140 418. L108 L141 419. L108 L142 420. L108 L143 421. L108 L144 422. L108 L145 423. L108 L146 424. L108 L147 425. L108 L148 426. L108 L149 427. L108 L150 428. L108 L151 429. L108 L152 430. L108 L153 431. L108 L154 432. L108 L155 433. L108 L156 434. L108 L157 435. L108 L158 436. L108 L159 437. L109 L110 438. L109 L111 439. L109 L112 440. L109 L113 441. L109 L114 442. L109 L115 443. L109 L116 444. L109 L117 445. L109 L118 446. L109 L119 447. L109 L120 448. L109 L121 449. L109 L122 450. L109 L123 451. L109 L124 452. L109 L125 453. L109 L126 454. L109 L127 455. L109 L128 456. L109 L129 457. L109 L130 458. L109 L131 459. L109 L132 460. L109 L133 461. L109 L134 462. L109 L135 463. L109 L136 464. L109 L137 465. L109 L138 466. L109 L139 467. L109 L140 468. L109 L141 469. L109 L142 470. L109 L143 471. L109 L144 472. L109 L145 473. L109 L146 474. L109 L147 475. L109 L148 476. L109 L149 477. L109 L150 478. L109 L151 479. L109 L152 480. L109 L153 481. L109 L154 482. L109 L155 483. L109 L156 484. L109 L157 485. L109 L158 486. L109 L159 487. L110 L111 488. L110 L112 489. L110 L113 490. L110 L114 491. L110 L115 492. L110 L116 493. L110 L117 494. L110 L118 495. L110 L119 496. L110 L120 497. L110 L121 498. L110 L122 499. L110 L123 500. L110 L124 501. L110 L125 502. L110 L126 503. L110 L127 504. L110 L128 505. L110 L129 506. L110 L130 507. L110 L131 508. L110 L132 509. L110 L133 510. L110 L134 511. L110 L135 512. L110 L136 513. L110 L137 514. L110 L138 515. L110 L139 516. L110 L140 517. L110 L141 518. L110 L142 519. L110 L143 520. L110 L144 521. L110 L145 522. L110 L146 523. L110 L147 524. L110 L148 525. L110 L149 526. L110 L150 527. L110 L151 528. L110 L152 529. L110 L153 530. L110 L154 531. L110 L155 532. L110 L156 533. L110 L157 534. L110 L158 535. L110 L159 536. L111 L112 537. L111 L113 538. L111 L114 539. L111 L115 540. L111 L116 541. L111 L117 542. L111 L118 543. L111 L119 544. L111 L120 545. L111 L121 546. L111 L122 547. L111 L123 548. L111 L124 549. L111 L125 550. L111 L126 551. L111 L127 552. L111 L128 553. L111 L129 554. L111 L130 555. L111 L131 556. L111 L132 557. L111 L133 558. L111 L134 559. L111 L135 560. L111 L136 561. L111 L137 562. L111 L138 563. L111 L139 564. L111 L140 565. L111 L141 566. L111 L142 567. L111 L143 568. L111 L144 569. L111 L145 570. L111 L146 571. L111 L147 572. L111 L148 573. L111 L149 574. L111 L150 575. L111 L151 576. L111 L152 577. L111 L153 578. L111 L154 579. L111 L155 580. L111 L156 581. L111 L157 582. L111 L158 583. L111 L159 584. L112 L113 585. L112 L114 586. L112 L115 587. L112 L116 588. L112 L117 589. L112 L118 590. L112 L119 591. L112 L120 592. L112 L121 593. L112 L122 594. L112 L123 595. L112 L124 596. L112 L125 597. L112 L126 598. L112 L127 599. L112 L128 600. L112 L129 601. L112 L130 602. L112 L131 603. L112 L132 604. L112 L133 605. L112 L134 606. L112 L135 607. L112 L136 608. L112 L137 609. L112 L138 610. L112 L139 611. L112 L140 612. L112 L141 613. L112 L142 614. L112 L143 615. L112 L144 616. L112 L145 617. L112 L146 618. L112 L147 619. L112 L148 620. L112 L149 621. L112 L150 622. L112 L151 623. L112 L152 624. L112 L153 625. L112 L154 626. L112 L155 627. L112 L156 628. L112 L157 629. L112 L158 630. L112 L159 631. L113 L114 632. L113 L115 633. L113 L116 634. L113 L117 635. L113 L118 636. L113 L119 637. L113 L120 638. L113 L121 639. L113 L122 640. L113 L123 641. L113 L124 642. L113 L125 643. L113 L126 644. L113 L127 645. L113 L128 646. L113 L129 647. L113 L130 648. L113 L131 649. L113 L132 650. L113 L133 651. L113 L134 652. L113 L135 653. L113 L136 654. L113 L137 655. L113 L138 656. L113 L139 657. L113 L140 658. L113 L141 659. L113 L142 660. L113 L143 661. L113 L144 662. L113 L145 663. L113 L146 664. L113 L147 665. L113 L148 666. L113 L149 667. L113 L150 668. L113 L151 669. L113 L152 670. L113 L153 671. L113 L154 672. L113 L155 673. L113 L156 674. L113 L157 675. L113 L158 676. L113 L159 677. L114 L115 678. L114 L116 679. L114 L117 680. L114 L118 681. L114 L119 682. L114 L120 683. L114 L121 684. L114 L122 685. L114 L123 686. L114 L124 687. L114 L125 688. L114 L126 689. L114 L127 690. L114 L128 691. L114 L129 692. L114 L130 693. L114 L131 694. L114 L132 695. L114 L133 696. L114 L134 697. L114 L135 698. L114 L136 699. L114 L137 700. L114 L138 701. L114 L139 702. L114 L140 703. L114 L141 704. L114 L142 705. L114 L143 706. L114 L144 707. L114 L145 708. L114 L146 709. L114 L147 710. L114 L148 711. L114 L149 712. L114 L150 713. L114 L151 714. L114 L152 715. L114 L153 716. L114 L154 717. L114 L155 718. L114 L156 719. L114 L157 720. L114 L158 721. L114 L159 722. L115 L116 723. L115 L117 724. L115 L118 725. L115 L119 726. L115 L120 727. L115 L121 728. L115 L122 729. L115 L123 730. L115 L124 731. L115 L125 732. L115 L126 733. L115 L127 734. L115 L128 735. L115 L129 736. L115 L130 737. L115 L131 738. L115 L132 739. L115 L133 740. L115 L134 741. L115 L135 742. L115 L136 743. L115 L137 744. L115 L138 745. L115 L139 746. L115 L140 747. L115 L141 748. L115 L142 749. L115 L143 750. L115 L144 751. L115 L145 752. L115 L146 753. L115 L147 754. L115 L148 755. L115 L149 756. L115 L150 757. L115 L151 758. L115 L152 759. L115 L153 760. L115 L154 761. L115 L155 762. L115 L156 763. L115 L157 764. L115 L158 765. L115 L159 766. L116 L117 767. L116 L118 768. L116 L119 769. L116 L120 770. L116 L121 771. L116 L122 772. L116 L123 773. L116 L124 774. L116 L125 775. L116 L126 776. L116 L127 777. L116 L128 778. L116 L129 779. L116 L130 780. L116 L131 781. L116 L132 782. L116 L133 783. L116 L134 784. L116 L135 785. L116 L136 786. L116 L137 787. L116 L138 788. L116 L139 789. L116 L140 790. L116 L141 791. L116 L142 792. L116 L143 793. L116 L144 794. L116 L145 795. L116 L146 796. L116 L147 797. L116 L148 798. L116 L149 799. L116 L150 800. L116 L151 801. L116 L152 802. L116 L153 803. L116 L154 804. L116 L155 805. L116 L156 806. L116 L157 807. L116 L158 808. L116 L159 809. L117 L118 810. L117 L119 811. L117 L120 812. L117 L121 813. L117 L122 814. L117 L123 815. L117 L124 816. L117 L125 817. L117 L126 818. L117 L127 819. L117 L128 820. L117 L129 821. L117 L130 822. L117 L131 823. L117 L132 824. L117 L133 825. L117 L134 826. L117 L135 827. L117 L136 828. L117 L137 829. L117 L138 830. L117 L139 831. L117 L140 832. L117 L141 833. L117 L142 834. L117 L143 835. L117 L144 836. L117 L145 837. L117 L146 838. L117 L147 839. L117 L148 840. L117 L149 841. L117 L150 842. L117 L151 843. L117 L152 844. L117 L153 845. L117 L154 846. L117 L155 847. L117 L156 848. L117 L157 849. L117 L158 850. L117 L159 851. L118 L119 852. L118 L120 853. L118 L121 854. L118 L122 855. L118 L123 856. L118 L124 857. L118 L125 858. L118 L126 859. L118 L127 860. L118 L128 861. L118 L129 862. L118 L130 863. L118 L131 864. L118 L132 865. L118 L133 866. L118 L134 867. L118 L135 868. L118 L136 869. L118 L137 870. L118 L138 871. L118 L139 872. L118 L140 873. L118 L141 874. L118 L142 875. L118 L143 876. L118 L144 877. L118 L145 878. L118 L146 879. L118 L147 880. L118 L148 881. L118 L149 882. L118 L150 883. L118 L151 884. L118 L152 885. L118 L153 886. L118 L154 887. L118 L155 888. L118 L156 889. L118 L157 890. L118 L158 891. L118 L159 892. L119 L120 893. L119 L121 894. L119 L122 895. L119 L123 896. L119 L124 897. L119 L125 898. L119 L126 899. L119 L127 900. L119 L128 901. L119 L129 902. L119 L130 903. L119 L131 904. L119 L132 905. L119 L133 906. L119 L134 907. L119 L135 908. L119 L136 909. L119 L137 910. L119 L138 911. L119 L139 912. L119 L140 913. L119 L141 914. L119 L142 915. L119 L143 916. L119 L144 917. L119 L145 918. L119 L146 919. L119 L147 920. L119 L148 921. L119 L149 922. L119 L150 923. L119 L151 924. L119 L152 925. L119 L153 926. L119 L154 927. L119 L155 928. L119 L156 929. L119 L157 930. L119 L158 931. L119 L159 932. L120 L121 933. L120 L122 934. L120 L123 935. L120 L124 936. L120 L125 937. L120 L126 938. L120 L127 939. L120 L128 940. L120 L129 941. L120 L130 942. L120 L131 943. L120 L132 944. L120 L133 945. L120 L134 946. L120 L135 947. L120 L136 948. L120 L137 949. L120 L138 950. L120 L139 951. L120 L140 952. L120 L141 953. L120 L142 954. L120 L143 955. L120 L144 956. L120 L145 957. L120 L146 958. L120 L147 959. L120 L148 960. L120 L149 961. L120 L150 962. L120 L151 963. L120 L152 964. L120 L153 965. L120 L154 966. L120 L155 967. L120 L156 968. L120 L157 969. L120 L158 970. L120 L159 971. L121 L122 972. L121 L123 973. L121 L124 974. L121 L125 975. L121 L126 976. L121 L127 977. L121 L128 978. L121 L129 979. L121 L130 980. L121 L131 981. L121 L132 982. L121 L133 983. L121 L134 984. L121 L135 985. L121 L136 986. L121 L137 987. L121 L138 988. L121 L139 989. L121 L140 990. L121 L141 991. L121 L142 992. L121 L143 993. L121 L144 994. L121 L145 995. L121 L146 996. L121 L147 997. L121 L148 998. L121 L149 999. L121 L150 1000. L121 L151 1001. L121 L152 1002. L121 L153 1003. L121 L154 1004. L121 L155 1005. L121 L156 1006. L121 L157 1007. L121 L158 1008. L121 L159 1009. L122 L123 1010. L122 L124 1011. L122 L125 1012. L122 L126 1013. L122 L127 1014. L122 L128 1015. L122 L129 1016. L122 L130 1017. L122 L131 1018. L122 L132 1019. L122 L133 1020. L122 L134 1021. L122 L135 1022. L122 L136 1023. L122 L137 1024. L122 L138 1025. L122 L139 1026. L122 L140 1027. L122 L141 1028. L122 L142 1029. L122 L143 1030. L122 L144 1031. L122 L145 1032. L122 L146 1033. L122 L147 1034. L122 L148 1035. L122 L149 1036. L122 L150 1037. L122 L151 1038. L122 L152 1039. L122 L153 1040. L122 L154 1041. L122 L155 1042. L122 L156 1043. L122 L157 1044. L122 L158 1045. L122 L159 1046. L123 L124 1047. L123 L125 1048. L123 L126 1049. L123 L127 1050. L123 L128 1051. L123 L129 1052. L123 L130 1053. L123 L131 1054. L123 L132 1055. L123 L133 1056. L123 L134 1057. L123 L135 1058. L123 L136 1059. L123 L137 1060. L123 L138 1061. L123 L139 1062. L123 L140 1063. L123 L141 1064. L123 L142 1065. L123 L143 1066. L123 L144 1067. L123 L145 1068. L123 L146 1069. L123 L147 1070. L123 L148 1071. L123 L149 1072. L123 L150 1073. L123 L151 1074. L123 L152 1075. L123 L153 1076. L123 L154 1077. L123 L155 1078. L123 L156 1079. L123 L157 1080. L123 L158 1081. L123 L159 1082. L124 L125 1083. L124 L126 1084. L124 L127 1085. L124 L128 1086. L124 L129 1087. L124 L130 1088. L124 L131 1089. L124 L132 1090. L124 L133 1091. L124 L134 1092. L124 L135 1093. L124 L136 1094. L124 L137 1095. L124 L138 1096. L124 L139 1097. L124 L140 1098. L124 L141 1099. L124 L142 1100. L124 L143 1101. L124 L144 1102. L124 L145 1103. L124 L146 1104. L124 L147 1105. L124 L148 1106. L124 L149 1107. L124 L150 1108. L124 L151 1109. L124 L152 1110. L124 L153 1111. L124 L154 1112. L124 L154 1113. L124 L156 1114. L124 L157 1115. L124 L158 1116. L124 L159 1117. L125 L126 1118. L125 L127 1119. L125 L128 1120. L125 L129 1121. L125 L130 1122. L125 L131 1123. L125 L132 1124. L125 L133 1125. L125 L134 1126. L125 L135 1127. L125 L136 1128. L125 L137 1129. L125 L138 1130. L125 L139 1131. L125 L140 1132. L125 L141 1133. L125 L142 1134. L125 L143 1135. L125 L144 1136. L125 L145 1137. L125 L146 1138. L125 L147 1139. L125 L148 1140. L125 L149 1141. L125 L150 1142. L125 L151 1143. L125 L152 1144. L125 L153 1145. L125 L154 1146. L125 L155 1147. L125 L156 1148. L125 L157 1149. L125 L158 1150. L125 L159

30. The first device of claim 22, wherein the first device is a consumer product.

31. The first device of claim 22, wherein the first device is an organic light emitting device.

32. The first device of claim 22, wherein the first device comprises a light panel.

33. The first device of claim 22, wherein the organic layer is an emissive layer and the compound is an emissive dopant.

34. The first device of claim 22, wherein the organic layer is an emissive layer and the compound is a non-emissive dopant.

35. The first device of claim 22, wherein the organic layer further comprises a host material.

36. The first device of claim 35, wherein the host material comprises a triphenylene containing benzo-fused thiophene or benzo-fused furan;

wherein any substituent in the host material is an unfused substituent independently selected from the group consisting of CnH2n+1, OCnH2n+1, OAr1, N(CnH2n+1)2, N(Ar1)(Ar2), CH═CH—CnH2n+1, C≡CCnH2n+1, Ar1, Ar1—Ar2, CnH2n—Ar1, or no substitution;
wherein n is from 1 to 10; and
wherein Ar1 and Ar2 are independently selected from the group consisting of benzene, biphenyl, naphthalene, triphenylene, carbazole, and heteroaromatic analogs thereof.

37. The first device of claim 35, wherein the host material comprises at least one chemical group selected from the group consisting of carbazole, dibenzothiphene, dibenzofuran, dibenzoselenophene, azacarbazole, aza-dibenzothiophene, aza-dibenzofuran, and aza-dibenzoselenophene.

38. The first device of claim 35, wherein the host material is selected from the group consisting of: and combinations thereof.

39. The first device of claim 35, wherein the host material comprises a metal complex.

Patent History
Publication number: 20150028290
Type: Application
Filed: Jul 25, 2013
Publication Date: Jan 29, 2015
Applicant: UNIVERSAL DISPLAY CORPORATION (EWING, NJ)
Inventors: Chuanjun Xia (Lawrenceville, NJ), Jui-Yi Tsai (Newtown, PA), Beatriz Eguillor Armendáriz (Zaragoza), Miguel A. Esteruelas Rodrigo (Zaragoza), Roberto Gómez Alabau (Zaragoza), Montserrat Oliván Esco (Zaragoza), Enrique Oñate Rodriguez (Zaragoza)
Application Number: 13/950,591