Abstract: Provided are neutral Pt or Pd organometallic compounds comprising a tetradentate ligand, wherein the organometallic compound comprises at least one Pt—C or Pd—C bond. Also provided are formulations comprising these organometallic compounds. Further provided are organic light emitting devices (OLEDs) as well as related consumer products that utilize these organometallic compounds.

Abstract: Provided are organometallic compounds that include a ligand LA of that are useful as emitters in OLEDs. Also provided are formulations comprising these organometallic compounds. Further provided are OLEDs and related consumer products that utilize these organometallic compounds.

Abstract: Provided are OLEDs that are designed with a specific material sets that minimize the lifetime degradation of the OLED at elevated temperatures, where the features of such OLED are defined by a ratio ?LT defined as (LT90 of the OLED measured at 40° C.)/(LT90 of an identical OLED measured at 20° C.) when each of the OLED and the identical OLED is run at the same current density; wherein the resulting ?LT is greater than 0.4.

Abstract: Provided are organometallic compounds comprising a polycyclic structure with at least two heteroaromatic rings, wherein at least two nitrogen-containing groups are bonded to a first of the at least two heteroaromatic rings and at least group RA selected from NR5R6 or SiR7R8R9 is bonded to a second of the at least two heteroaromatic rings. Also provided are formulations comprising these organometallic compounds. Further provided are organic light emitting devices (OLEDs) and related consumer products that utilize these organometallic compounds.

Abstract: In one aspect, provided is a compound of Formula I, In Formula I, M is Pt or Pd; L has the structure F1 is or a direct bond; rings A, B, C, D, and F are independently monocyclic rings or multicyclic fused ring systems; each of X1 to X10 is independently C or N; each of Z1 to Z4 is C or N; each of L1 to L5 is a direct bond or an organic linker, each of a, b, c, and d is 0 or 1; each K1 to K4 is a direct bond, O, or S; each of Z1 to Z4 that is connected to O or S is C; and each RA, RB, RC, RD, RE, and RX is independently hydrogen or a substituent.

Abstract: A compound of Formula I, is provided. In Formula I, moiety A and moiety B are monocyclic rings or polycyclic ring structures; X1 and X2 are C or N; each RA, RB, RC, RD, RE, RF, and RX is hydrogen or a substituent; at least one of RA, RB, RC, RD, RE, RF, and RX comprises a silyl group; if n=1, then RD is joined with RF to form a ring; if n=0 and m=1, then RD is joined with either RE or RA to form a ring, with the proviso that if RD is joined to RA, then RX is a substituted or unsubstituted aryl or heteroaryl group; and if n=0 and m=0, then the compound has the structure of Formula V, Formulations, OLEDs, and consumer products comprising the compound are also provided.

Abstract: Provided is an organic light emitting device including a light emitting stack that includes: a first electrode; a second electrode; a first layer disposed between the first electrode and the second electrode. The first layer can be a hole injecting layer, a hole transporting layer, an electron blocking layer, an emissive layer, a hole blocking layer, an electron transporting layer, or an electron injecting layer. The first layer includes a first compound and a second compound mixed together. The first compound includes a first element (F1) that can be D, F, CN, Si, Ge, P, B, or Se. The second compound includes a first element (S1) that can be D, F, CN, Si, Ge, P, B, or Se. The first element of the first compound can be same or different from the first element (S1) of the second compound.

Abstract: Provided is an OLED that includes: a first electrode; a second electrode; a first layer, and an emissive layer disposed between the first electrode and the second electrode, where the first layer is selected from the group consisting of a hole injecting layer, a hole transporting layer, an electron blocking layer, a hole blocking layer, an electron transporting layer, and an electron injecting layer; and the first layer includes a first compound that includes a first element selected from the group that only includes D, F, CN, Si, Ge, P, B, and Se.

Abstract: Provided are OLEDs whose EML has a figure of merit (FOM) value of equal to or larger than 2.50 that have enhanced efficiency and lifetimes. FOM can be determined according to the methods disclosed herein.

Abstract: Provided are compounds comprising a 9-membered ring to which four 6-membered carbocyclic or heterocyclic aromatic rings as well as one further 5-membered or 6-membered heterocyclic ring are fused. Also provided are formulations comprising these compounds. Further provided are organic light emitting devices (OLEDs) as well as related consumer products that utilize these compounds.

Abstract: Provided are organometallic compounds that include a ligand LA of that are useful as emitters in OLEDs. Also provided are formulations comprising these organometallic compounds. Further provided are OLEDs and related consumer products that utilize these organometallic compounds.

Abstract: Provided are organometallic compounds based on platin or palladium and their various uses including as emitters in devices having the structure of Formula I comprising at least four rings as defined herein. Also provided are formulations comprising these compounds. Further provided are organic light emitting devices and related consumer products that utilize these compounds.

Abstract: Provided organic light emitting device (OLED) comprising compounds having Formula I: wherein rings A, B, C, D, E, and F are each independently a single or fused ring system, consisting of one or more 5-membered or 6-membered carbocyclic or heterocyclic rings; L1, L2, L3, L4, L5, and L6 are each independently optionally present or is selected from the group consisting of O, S, Se, BR, BRR?, NR, C?R, CRR?, SiRR?, P(O)R, and GeRR?; a, b, c, d, e and f are each 0 for not present or 1 for present; each of R, R?, R1, R2, R3, R4, R5, and R6 is independently a hydrogen or a substituent; and any two of adjacent R, R?, R1, R2, R3, R4, R5, and R6 can be joined or fused to form a ring. The compound is an ETL.

Abstract: In one aspect, provided is a compound of Formula I, In Formula I, M is Pt or Pd; L has the structure F1 is or a direct bond; rings A, B, C, D, and F are independently monocyclic rings or multicyclic fused ring systems; each of X1 to X10 is independently C or N; each of Z1 to Z4 is C or N; each of L1 to L5 is a direct bond or an organic linker; each of a, b, c, and d is 0 or 1; each K1 to K4 is a direct bond, O, or S; each of Z1 to Z4 that is connected to O or S is C; and each RA, RB, RC, RD, RE, and RX is independently hydrogen or a substituent.

Abstract: Compounds of Formula I, and Formula IIa, Formula IIb, are provided. In these structures, M is Pt or Pd; each of X1 to X6, X9 to X12, and Z1 to Z3 is C or N; each of L1, L2, L3, and L4 is a direct bond or a linker; at least three of L1, L2, L3, and L4 are present; each K1, K2, and K3 is a bond, O, or S; when Z1 is N, ring A in Formula I is not a pyridine or pyrazole; L5 is a bond or an organic linker; Y is selected from the group consisting of amino, alkoxy, aryloxy, or SiR1R2R3; when Y is SiR1R2R3, L2 is not BR. Devices, consumer products, and formulations containing these compounds are also disclosed.

Abstract: The present disclosure relates to organometallic compounds and formulations and their various uses including as hosts or emitters in devices such as organic light emitting diodes and related electronic devices. In particular, the present disclosure provides are compounds having the structure of Formula I as defined herein. Also provided are formulations comprising these compounds. Further provided are OLEDs and related consumer products that utilize these compounds.

Abstract: Provided are compounds containing platinum which is coordinated by a tetradentate ligand wherein the tetradentate ligand comprises at least one five-membered ring comprising at least one nitrogen atom which is fused to a further five- or six membered ring. Also provided are formulations comprising these compounds. Further provided are OLEDs and related consumer products that utilize these compounds.

Abstract: The present invention is generally directed to novel fluorophores and their use in imaging methods. In one case, the present invention provides a compound according to the structure shown in FIG. 20A. In another case, the present invention provides a method of imaging one or more cellular structures within one or more cells using a compound of the structure shown in FIG. 20A.

Abstract: The present invention is generally directed to novel fluorophores and their use in imaging methods. In one case, the present invention provides a compound according to the structure shown in FIG. 20A. In another case, the present invention provides a method of imaging one or more cellular structures within one or more cells using a compound of the structure shown in FIG. 20A.

Abstract: The present invention is generally directed to novel fluorophores and their use in imaging methods. In one case, the present invention provides a compound according to the structure shown in FIG. 20A. In another case, the present invention provides a method of imaging one or more cellular structures within one or more cells using a compound of the structure shown in FIG. 20A.