Abstract: A material which can emit phosphorescence is disclosed. Further, a light-emitting element having good chromaticity is disclosed. An embodiment of the present invention is an organometallic complex including a structure as represented by the general formula (1): wherein R1 represents an alkyl group having 1 to 4 carbon atoms; each of R2 to R5 represents any one of hydrogen, a halogen element, an acyl group, an alkyl group, an alkoxyl group, an aryl group, a cyano group, and a heterocyclic group; Ar represents an aryl group or a heterocyclic group, preferably, an aryl group having an electron withdrawing group or a heterocyclic group having an electron withdrawing group; and M represents a Group 9 element or a Group 10 element. By virtue that the Ar has an electron withdrawing group, an organometallic complex which emits phosphorescence with higher emission intensity can be obtained.

Abstract: A polymer useful in an optoelectronic device comprises structural unit of formula I: wherein R1 is, independently at each occurrence, a C1-C20 aliphatic radical, a C3-C20 aromatic radical, or a C3-C20 cycloaliphatic radical; a is, independently at each occurrence, an integer ranging from 0-4; Ar1 is aryl or heteroaryl; Ar2 is fluorene; R2 is alkylene, substituted alkylene, oxaalkylene, CO, or CO2; R3, R4 and R5 are independently hydrogen, alkyl, alkoxy, alkylaryl, aryl, arylalkyl, heteroaryl, substituted alkyl; substituted alkoxy, substituted alkylaryl, substituted aryl, substituted arylalkyl, or substituted heteroaryl; and L is derived from phenylpyridine, tolylpyridine, benzothienylpyridine, phenylisoquinoline, dibenzoquinozaline, fluorenylpyridine, ketopyrrole, 2-(1-naphthyl)benzoxazole)), 2-phenylbenzoxazole, 2 phenylbenzothiazole, coumarin, thienylpyridine, phenylpyridine, benzothienylpyridine, 3 methoxy-2-phenylpyridine, thienylpyridine, phenylimine, vinylpyridine, pyridylnaphthalene, pyridylpyrro

Abstract: Disclosed herein are red phosphorescent compounds of the following one of Formulas 1 to 3 wherein Formula 1 R1 and R2 are independently a C1-C4 alkyl group, R3, R4, R5 and R6 are independently selected from hydrogen, C1-C4 alkyl groups and C1-C4 alkoxy groups, wherein Formula 2 R1, R2, R3 and R4 are independently selected from C1-C4 alkyl groups and C1-C4 alkoxy groups, wherein Formula 3 R1, R2, R3 and R4 are independently selected from hydrogen, C1-C4 alkyl groups and C1-C4 alkoxy groups, and wherein is selected from 2,4-pentanedione, 2,2,6,6,-tetramethylheptane-3,5-dione, 1,3-propanedione, 1,3-butanedione, 3,5-heptanedione, 1,1,1-trifluoro-2,4-pentanedione, 1,1,1,5,5,5-hexafluoro-2,4-pentanedione and 2,2-dimethyl-3,5-hexanedione.

Abstract: Organometallic compounds comprising a germanium-containing substituent are provided. The compounds may be used in organic light emitting devices to provide improved device efficiency, line shape and lifetime. In particular, the compounds comprise a phenylquinoline or phenylisoquinoline ligand having a germanium-containing substituent on the quinoline or isoquinoline portion of the ligand. These compounds may be advantageously used as red emitters in the emissive layer of organic light emitting devices.

Abstract: A metal complex which has a metal complex structure showing light emission from triplet excited state, and has a monovalent group derived from carbazole, and a light-emitting device using said metal complex.

Abstract: Provided are an organometallic complex providing highly efficient phosphorescence and an organic electroluminescence device using the organometallic complex represented by Formula 1: MLmL?n where M is Ir, Os, Pt, Pb, Re, Ru or Pd, L and L? are different bidentate ligands, m is 1, 2 or 3, and n is 3?m. The organometallic complex can be used to form an organic layer of the organic electroluminescence device, efficiently emits light of a wavelength corresponding to red light, and has high brightness and low operating voltage.

Abstract: Organometallic complexes which bear at least one ligand which has a unit having a triplet energy of at least 22 000 cm?1, a process for preparing the organometallic complexes, a mixture comprising at least one of these organometallic complexes, the use of the organometallic complexes or of the mixture in organic light-emitting diodes, the organometallic complexes preferably being used as emitter materials, and specific nitrogen- or phosphorus-substituted triphenylene derivatives and a process for their preparation, the organometallic complex including a monoanionic bidentate ligand of formula (IIa)

Abstract: An organic electroluminescent device includes: a pair of electrodes; and at least one organic compound layer therebetween, the at least one organic compound layer comprises at least a light-emitting layer, wherein at least one of the at least one organic compound layer comprises at least one compound represented by a particular formula.

Abstract: An organic light emitting device is provided. The device has an anode, a cathode, and an emissive layer disposed between the anode and the cathode. The emissive layer further includes a molecule of Formula I (shown below) wherein an alkyl substituent at position R?5 results in high efficiency and operational stability in the organic light emitting device.

Abstract: A material for an organic electroluminescence device containing at least phosphorescent metal complex A and phosphorescent metal complex B, metal complex A and metal complex B are both organic metal complexes containing a metal having an atomic weight of 40 or more and a ligand, metal complex A has a specific structure, and metal complex B has the same structure with metal complex A except that one or more atoms directly bonding to ligand structures are substituted with atoms belonging to the same group of the atoms and having a greater atomic weight, and ratio of the content of metal complex B to the content of metal complex A is 0.005% by mass or more and 2% by mass or less.

Abstract: Organic electroluminescence devices including phosphorescent polymer compounds having high light-emitting efficiency and long luminescent life. These phosphorescent polymer compounds include a structural unit that is derived from a compound of Formula (1) below as a side-chain thereof. In Formula (1), L1 and L2 are two different kinds of ligands, and are selected from Formulae (a1) to (a6) and (b1) to (b6), respectively, as defined in the specification.

Abstract: An organic light emitting device having an anode, a cathode and an organic layer disposed between the anode and the cathode is provided.

Abstract: An iridium phosphorescent dendrimer represented by Formula 1: wherein A is a carbazole-based dendron. Also disclosed is a method of preparing the iridium phosphorescent dendrimer and an electroluminescent device including the iridium phosphorescent dendrimer.

Abstract: A material for an organic electroluminescence device including a phosphorescent metal complex containing a monoanionic bidentate ligand represented by the following formula (A1-1) or formula (A3-1) as defined in the specification and a non-radiative metal having an atomic weight of 40 or more, an organic electroluminescence device including the material for an organic electroluminescence device, and a light emitting unit, a display unit and an illumination unit each including the organic electroluminescence device are provided.

Abstract: The present invention provides a series of phosphorescent transition metal complexes having a facially arranged, carbon-phosphorus-carbon (C^P^C) tridentate chelate, alone with one monoanionic bidentate chromophoric chelate (either C^N or A^N) and one arbitrary charge neutral chelate (L), or with one charge neutral bidentate chromophoric chelate (N^N) and one arbitrary anionic ligand (X); all of them can be used to generate high efficiency photo-induced phosphorescence at room temperature, as well as bright electroluminescence upon employment of these materials in the fabrication of organic light-emitting devices.

Abstract: In a general formula (1), each of R1 and R2 represents any one of hydrogen, an alkyl group, a halogen group, —CF3, an alkoxy group, and an aryl group. M represents an element that belongs to Group 9 or Group 10. Here, an alkyl group having 1 to 4 carbon atoms is preferable in the alkyl group. A fluoro group is particularly preferable in the halogen group. An alkoxy group having 1 to 4 carbon atoms is preferable in the alkoxy group. A phenyl group is particularly preferable in the aryl group. Iridium is particularly preferable among the elements that belong to Group 9, and platinum is particularly preferable among the elements that belong to Group 10. The general formula (1) is inserted.

Abstract: The invention provides emissive materials and organic light emitting devices using the emissive materials in an emissive layer disposed between and electrically connected to an anode and a cathode. The emissive materials include compounds with the following structure: wherein at least one of R8 to R14 is phenyl or substituted phenyl, and/or at least two of R8 to R14 that are adjacent are part of a fluorenyl group. The emissive materials have enhanced electroluminescent efficiency and improved lifetime when incorporated into light emitting devices.

Abstract: Heteroleptic compounds containing phenylpyridine and phenylbenzimidazole are provided. The compounds may be used in organic light emitting devices, particularly as emissive dopants in the emissive layer of such devices.

Abstract: An organic electroluminescent device comprises: a pair of electrodes; and at least one organic compound layer therebetween, the at least one organic compound layer comprises at least a light-emitting layer, wherein at least one of the at least one organic compound layer comprises at least one compound represented by formula (1): Formula (1): wherein Q1 to Q4 each independently represents an atomic group for forming an aromatic hydrocarbon ring or an aromatic heterocyclic ring in combination with two carbon atoms in formula (1); A1 and A2 each independently represents a carbon atom or a nitrogen atom; and Q5 and Q6 each independently represents an atomic group for forming an aromatic hydrocarbon ring or an aromatic heterocyclic ring in combination with A1 and A2 respectively, provided that Q5 and Q6 are not combined through a single bond, a divalent aromatic hydrocarbon ring group or a divalent aromatic heterocyclic ring group.

Abstract: An organic electroluminescent device, which comprises: a pair of electrodes; and an organic compound layer including a light-emitting layer between the pair of electrodes, wherein the organic compound layer comprises a compound represented by formula (I): wherein Z1, Z2, Z3 and Z4 each independently represents an atom selected from the group consisting of carbon, nitrogen, sulfur and oxygen and necessary for forming an unsaturated 6-membered ring skeleton, the atom may have a hydrogen atom or a substituent; a bond in the unsaturated 6-membered ring indicates a single bond or a double bond; and R1 represents a substituent.

Abstract: A compound is represented by the following formula (I): wherein N represents a nitrogen atom; C represents a carbon atom; Pt represents a platinum atom; Z1, Z4, Z5, and Z8 represent a carbon atom or a nitrogen atom; Z2, Z3, Z6, and Z7 represent a carbon atom, a nitrogen atom, an oxygen atom or a sulfur atom; Z11, and Z16 represent a carbon atom or a nitrogen atom; Z12, Z13, Z14, Z15, Z17, Z18, Z19, and Z20 represent a carbon atom, a nitrogen atom, an oxygen atom, or a sulfur atom; Y1 and Y2 represent a single bond, an oxygen atom, a sulfur atom, a nitrogen atom; A11 represents a divalent linking group; B1 and B2 represent a single bond or a divalent linking group.

Abstract: A red phosphorescent compound, includes a host material being capable of transporting an electron or a hole; and a dopant material represented by the following formula 1: wherein each of R1 to R4 is selected from the group consisting of hydrogen atom (H), C1 to C6 alkyl and C1 to C6 alkoxy, and at least one of R1 to R4 is C1 to C6 alkyl, and wherein each of R5 to R7 is selected from the group consisting of hydrogen, C1 to C6 alkyl and pyrrole, and at least one of R5 to R7 is pyrrole, and wherein each of X and Y is selected from the group consisting of H, non-substituted C1 to C6 alkyl and C1 to C6 alkyl substituted by fluorine.

Abstract: An organic electroluminescent device, which has a pair of electrodes, and at least one organic layer including a luminescent layer between the electrodes, wherein the organic layer contains at least one compound of formula (1): wherein Q11 are atoms for forming a nitrogen-containing hetero ring; Z11 to Z13 each independently represents CR, wherein R represents a substituent, CH or N; n11 is 0 or 1; M11 is a metal or boron ion that may further have a ligand(s); and a compound of formula (6): wherein R63 to R66 each is a hydrogen atom or a substituent; X61 to X64 and Z61 to Z66 each is CR, wherein R represents a substituent, CH or N.

Abstract: A method of using a metal complex as an n-dopant for doping an organic semiconducting matrix material in order to alter the latter's electrical characteristics is provided. In order to provide n-doped organic semiconductors with matrix materials having a low reduction potential, while achieving high conductivities, the n-dopant is a neutral electron-rich metal complex with a neutral or charged transition metal atom as a central atom and having at least 16 valence electrons. The complex can be polynuclear and can possess at least one metal-metal bond. At least one ligand can form a ? complex with the central atom, which can be a bridge ligand, or it can contain at least one carbanion-carbon atom or a divalent atom. Methods for providing the novel n-dopants are provided.

Abstract: An organic light-emitting device in which at least one organic layer including a light-emitting layer is sandwiched between an anode and a cathode and a phosphorescent compound in the light-emitting layer emits light.

Abstract: An organometallic complex having a structure represented by the general formula (G1) is synthesized and applied to a light-emitting element. In the formula, R1 represents either an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms, or an alkoxycarbonyl group having 1 to 5 carbon atoms; R2 and R3 each show either hydrogen or an alkyl group 1 to 4 carbon atoms; Ar represents an arylene group having 6 to 25 carbon atoms; M is a center metal selected from Group 9 element and Group 10 element.

Abstract: An organic electroluminescent device is provided and has at least one organic layer between a pair of electrodes. The organic compound contains a compound represented by the following formula (I): Z1 and Z2 each represents a nitrogen-containing aromatic 6-membered ring coordinating to platinum atom at the nitrogen atom, Q represents a nitrogen-containing aromatic 5-membered ring having one or two nitrogen atoms, L1 and L2 each represents a single bond or a divalent group, and n represents 0 or 1.

Abstract: An OLED device including a cathode, an anode, and having therebetween a phosphorescent light-emitting layer that contains a light-emitting organometallic complex including a precious metal, a first ligand including an imidazole group and a second nitrogen heterocycle group, and at least one second different ligand.

Abstract: Provided is a cyclometalated transition metal complex represented by Formula 1, Formula 2 or Formula 3: By including a new ancillary ligand, the cyclometalated transition metal complex can efficiently emit red light using a phosphor by intersystem crossing (ISC) of excitons to triplet states and then metal to ligand charge transfer (MLCT). An organic light emitting device prepared using the transition metal compound shows high luminous efficiency and high external quantum efficiency.

Abstract: An organic electroluminescence device, includes: a pair of electrodes; and at least one organic layer including a light emitting layer, the light emitting layer being provided between the pair of electrodes, wherein at least one layer of the at least one organic layer contains a compound represented by formula (1) as defined in the specification.

Abstract: The invention provides a cyclometallated complex comprising the structure of formula I wherein: M is a d-block transition metal; B is a five- or six-membered aryl or heteroaryl ring which is optionally substituted and optionally fused to one or more other aryl or heteroaryl rings; A is a five- or six-membered heteroaryl ring comprising at least three nitrogen atoms; R1 is a group other than hydrogen; n is zero or an integer equal to or greater than one; and A and B are optionally fused or linked by one or more covalent bonds. The invention also provides the use of such complexes in optoelectronic devices, and in particular in organic light emitting devices.

Abstract: An organic electroluminescent device, which has a pair of electrodes and at least one organic layer including a luminescent layer between the pair of electrodes, wherein at least one layer between the pair of electrodes comprises at least one metal complex having a tridentate- or higher polydentate-chain structure ligand.

Abstract: An organic electroluminescent device includes a pair of electrodes; and an organic layer between the pair of electrodes, which includes a light-emitting layer and contains a compound represented by the following formula (1): wherein M101 represents a transition metal belonging to group IX of the Periodic Table; L101 represents a ligand; n101 represents an integer of 1 or more; m101 represents an integer of 0 or more; Hy101 represents a heterocyclic aromatic ring; Z101, Z102, Z103 and Z104 each represents a substituted or unsubstituted carbon atom, or a nitrogen atom; and the dashed line represents a coordinate bond, and the compound represented forms a condensed ring via any of Z101 and Z102, Z102 and Z103, and Z103 and Z104, wherein Z in the crosslinking site forming the condensed ring represents a carbon atom.

Abstract: An organic electroluminescent device having a pair of electrodes and at least one organic layer including a light-emitting layer interposed between the pair of electrodes, in which the organic layer contains at least one platinum complex compound having a quadridentate ligand containing a partial structure represented by formula (I): wherein Z1 represents a nitrogen-containing heterocycle coordinated to the platinum through a nitrogen atom; L1 represents a single bond or a linking group; R1, R3 and R4 each independently represent a hydrogen atom or a substituent; and R2 represents a substituent.

Abstract: A process for preparing a platinum complex represented by the following formula (1) includes reacting a compound represented by the following formula (B-2) and a compound represented by the following formula (B-2?) with a compound represented by the following formula (A-0) to obtain a compound represented by the following formula (C-0); and reacting the compound represented by the formula (C-0) with a platinum salt:

Abstract: A material for an organic electroluminescence element, characterized in that it comprises a platinum complex formed from a platinum ion and a ligand having at least one aryl group being not capable of free rotation or at least one aromatic heterocyclic group being not capable of free rotation; a display device, characterized in that it comprises said material for an organic electroluminescence element and exhibits high luminous efficiency and long luminous life; and an illumination device, characterized in that it comprises said material for an organic electroluminescence element and exhibits high luminous efficiency and long luminous life.

Abstract: An organic electroluminescence device, includes: a pair of electrodes; and at least one organic layer including a light emitting layer, the light emitting layer being provided between the pair of electrodes, wherein at least one layer of the at least one organic layer contains a compound represented by formula (I) as defined in the specification.

Abstract: The invention provides an organic electroluminescent device having at least an organic compound layer provided between a pair of electrodes. The organic electroluminescent device has at least a polymer comprising a metal complex containing a tri- or higher-dentate ligand in the polymer molecule. The metal complex preferably contains a tetra- or higher-dentate ligand in the polymer molecule. At least one of the ligands is preferably a chain. The metal complex preferably contains a transition metal ion or a rare earth metal ion. The metal complex preferably contains a nitrogen atom in its complex structure. Further, the polymer preferably contains the metal complex in its main chain or its side chain.

Abstract: A platinum complex is represented by General Formula (1) below. In Formula (1), Pt represents a tetravalent platinum atom. The ring structure A represents a cyclic substituent having a carbon atom that forms a covalent bond with Pt. The ring structure B represents a cyclic substituent having Q that forms a coordination bond with Pt, where Q is a carbon atom, a nitrogen atom, or a phosphorous atom. X1 represents a monovalent-bidentate ligand, and X2 represents a divalent-bidentate ligand.

Abstract: Compounds comprising phosphorescent metal complexes comprising cyclometallated imidazo[1,2-f]phenanthridine and diimidazo[1,2-a:1?,2?-c]quinazoline ligands, or isoelectronic or benzannulated analogs thereof, are described. Organic light emitting devices comprising these compounds are also described.

Abstract: A substituted ethynyl gold-nitrogen containing heterocyclic carbene complex of formula (1): wherein L represents a nitrogen containing heterocyclic carbene ligand; X represents an alkyl, a cycloalkyl, an aryl, an aralkyl or a heterocyclic group; in which one or more hydrogen atoms on the carbon atom(s) of X may be replaced by a halogen atom, an alkyl, a cycloalkyl, an alkenyl, an aryl, an aralkyl, an alkoxy, an aryloxy, a dialkylamino, an acyl or an arylcarbonyl group; and, when more than one hydrogen atom on the carbon atom(s) of X is replaced by the alkyl, the alkenyl, the aryl, the aralkyl, the alkoxy, the aryloxy, the dialkylamino, the acyl or the arylcarbonyl group, the adjacent groups may be bonded together to form a ring, a method for preparing the same, and an organic electroluminescent device containing the same in at least one organic compound thin layer.

Abstract: Disclosed is an organic EL device having high luminous efficiency and long emission life, wherein emission wavelength is controlled. Also disclosed are an illuminating device and a display. Specifically disclosed is an organic electroluminescent device containing at least a light-emitting layer sandwiched between an anode and a cathode. This organic electroluminescent device is characterized in that the light-emitting layer contains a metal complex having a partial structure represented by the following general formula (1).

Abstract: Organic devices comprising an organic layer, wherein the organic layer is non-electroluminescent and comprises a cross-linked metal complex. The cross-linked metal complex may be formed by cross-linking a cross-linkable iridium complex, which comprises a set of ligands coordinated to a central iridium atom. One or more of the ligands have attached thereon, one or more polymerizable groups that are able to polymerize with other molecules to form intermolecular covalent bonds. In some cases, the organic layer may also comprise a dopant. Also provided are a method of making an organic light-emitting device, an iridium complex, and an organic-light emitting device using certain iridium complexes.

Abstract: An organic light emitting device having an anode, a cathode and an organic layer disposed between the anode and the cathode is provided.

Abstract: An organic electroluminescent device comprising: a pair of electrodes; and at least one organic compound layer including a light emitting layer between the pair of electrodes, wherein the light emitting layer contains a host material and a light emitting material, and wherein the host material contains a metal complex having a tridentate or more ligand.

Abstract: An organometallic complex comprising a moiety represented by the following general formula (1). The organometallic complex is applied to a light-emitting element, and a light-emitting device reduced in power consumption is manufactured by using the light-emitting element.

Abstract: The present invention relates to an organic electronic device including a first electrode, a second electrode and a first organic layer interposed between the first electrode and the second electrode, wherein the first organic layer comprises at least one metal organic compound and at least one metal oxide. The present invention further relates to an apparatus comprising the organic electronic device according to the present invention.

Abstract: Provided are red phosphorescent compounds represented by Formula 1: Organic electroluminescent devices using the red phosphorescent compounds are further provided. The organic electroluminescent devices exhibit good red color purity, high quantum efficiency, high power efficiency, high luminance, and long lifetime.

Abstract: An organic light emitting device having a phase-separated light-emissive layer comprising: a charge transport phase comprising a charge transport material; and an emitting phase, the emitting phase comprising a plurality of discrete emissive domains dispersed in the charge transport phase, each emitting domain comprising a host material and one or more metal complexes for emitting light by phosphorescence; wherein the charge transport material has a T1 energy level lower than the T1 energy level of the metal complexes and the host material has a T1 energy level higher than the T1 energy level of the metal complexes.

Abstract: An organic light emitting diode with Ir complex is disclosed in this specification, wherein the Ir complex is used as the phosphorous emitter. The chemical containing pyridyl triazole or pyridyl imidazole functional group is used as the auxiliary monoanionic bidentate ligand in the mentioned Ir complex, so that the CIE coordinate of the mentioned Ir complex is adjustable and the light emitting performance of the Ir complex is improved.