Abstract: Novel electroluminescent devices containing bicarbazole triazine compounds as emissive dopants are described. Devices incorporating this class of compounds exhibit delayed fluorescence characteristics that showed EQE's far exceeding the theoretical limit for a conventional fluorescent device.

Abstract: A compound of Formula I is disclosed. In the structure of Formula I, ring A and ring B are 5- or 6-membered rings; L1, L2, L3, and Z are each linking groups; a, b, and c are each 0 or 1, and a+b+c=2 or 3; K1, K2, K3, and K4 are each a direct bond, O, or S; Z1 to Z6 and X1 to X5 are each C or N; W is a linking group comprising 3 to 5 linking atoms, which can be further substituted; M is Pd or Pt; each RA, RB, RC, RD, RE, R, and R? is selected from H or a variety of substituents, and can be joined to another substituent for form a ring. Organic light emitting devices, consumer products, formulations, and chemical structures containing the compounds are also disclosed.

Abstract: Platinum compounds of Formulas I and II useful in a variety of devices, such as, for example organic-light emitting diodes (OLEDs).

Abstract: A compound comprising a ligand LA having the formula: is disclosed. Such a compound is suitable for use an emitter in organic light emitting devices.

Abstract: A compound having a structure of Formula I, useful as a phosphorescent emitter in organic light emitting devices is disclosed. In Formula I, Ar1 and Ar2 are independently 5- or 6-membered aromatic rings; X1 to X11 are independently C or N; at least one of X1 to X11 is N; one of Z1 and Z2 is C, and the other one is N; when Z1 is N, X4 is C; L1, L2, and L3 are each linkers; at least one of L2 and L3 is present; each of R1 to R5, R?, and R? are independently hydrogen or a substituent. Formulations, OLEDs, and consumer products containing the same are also disclosed.

Abstract: Platinum compounds of Formulas I and II useful in a variety of devices, such as, for example organic-light emitting diodes (OLEDs).

Abstract: A compound having a formula useful as a phosphorescent emitter in organic light emitting devices is disclosed.

Abstract: Disclosed are platinum or palladium complexes featuring tetradentate ligands with at least one side that has an NN binding motif are disclosed. The disclosed organometallic compounds have a structure of where M is Pt or Pd. Also provided are formulations comprising these organometallic compounds. Further provided are OLEDs and related consumer products that utilize these organometallic compounds.

Abstract: Tetradentate platinum complexes including an imidazole/benzimidazole carbene having a structure of Formula I is disclosed. In Formula I, M is Pd or Pt. These platinum carbenes with the specific substituents disclosed herein are novel and provides phosphorescent emissive compounds that exhibit physical properties that can be tuned, such as sublimation temperature, emission color, and device stability.

Abstract: Host materials with pentafluorophenyl substitution are described. These compounds are designed for, and used for hosting aza substituted dopants that may be susceptible to intramolecular deprotonation. In addition, the fluorinated substitution aids with electron transport within the emissive layer.

Abstract: A compound is disclosed that is selected from the group consisting of a structure having Formula I and a structure having Formula II

Abstract: Phosphorescent complexes are designed with intramolecular H-bonding properties to prevent deprotonation of neighboring molecules.

Abstract: A compound having the structure of Formula I is disclosed. In the structure of Formula I, each of R1, R2, and R3 is independently a hydrogen, a non-fused aryl group having one meta-substituent, or a non-fused heteroaryl six-membered ring having one or more meta-substituents; each meta-substituent is a non-fused aryl or non-fused heteroaryl six-membered ring optionally substituted with further substituents selected from the group consisting of non-fused aryl groups, non-fused heteroaryl groups, and alkyl groups; and at least one of R1, R2, and R3 is a non-fused aryl having one meta-substituent or a heteroaryl six-membered ring having at least one meta-substituent, wherein each meta-substituent is a non-fused aryl or non-fused heteroaryl group further substituted with a chain of at least two non-fused aryl or non-fused heteroaryl groups. The compounds may be useful in phosphorescent organic light emitting devices.

Abstract: Host materials with pentafluorophenyl substitution are described. These compounds are designed for, and used for hosting aza substituted dopants that may be susceptible to intramolecular deprotonation. In addition, the fluorinated substitution aids with electron transport within the emissive layer.

Abstract: Phosphorescent complexes are designed with intramolecular H-bonding properties to prevent deprotonation of neighboring molecules.

Abstract: A compound comprising a ligand LA of Formula I: as well as, devices and formulations containing the compound of Formula 1 are disclosed. In the compounds, having a ligand La of Formula I: wherein R1 represents mono, or di-substitution, or no substitution; wherein R2 represents di, tri, or tetra-substitution; wherein R is selected from hydrogen, deuterium, alkyl, cycloalkyl, and combinations thereof; wherein R1 and R2 are each independently selected from hydrogen, deuterium, alkyl, cycloalkyl, aryl, and combinations thereof; wherein at least one pair of adjacent R2 substitutions are joined to form a fused ring; wherein the ligand LA is coordinated to a metal M; and wherein the ligand LA is optionally linked with other ligands to comprise a tridentate, tetradentate, pentadentate or hexadentate ligand.

Abstract: A compound having the structure of Formula I is disclosed. In the structure of Formula I, each of R1, R2, and R3 is independently a hydrogen, a non-fused aryl group having one meta-substituent, or a non-fused heteroaryl six-membered ring having one or more meta-substituents; each meta-substituent is a non-fused aryl or non-fused heteroaryl six-membered ring optionally substituted with further substituents selected from the group consisting of non-fused aryl groups, non-fused heteroaryl groups, and alkyl groups; and at least one of R1, R2, and R3 is a non-fused aryl having one meta-substituent or a heteroaryl six-membered ring having at least one meta-substituent, wherein each meta-substituent is a non-fused aryl or non-fused heteroaryl group further substituted with a chain of at least two non-fused aryl or non-fused heteroaryl groups. The compounds may be useful in phosphorescent organic light emitting devices.

Abstract: The present invention includes novel metal complexes of 5H-benzimidazo[1,2-a]benzimidazole (“BimBim”) and related ligands. The novel ligands may coordinate to one or two metal centers. The metal complexes of the present invention comprising these ligands may be useful as emissive materials and n-dopants in OLED devices.

Abstract: Organometallic compounds comprising an imidazole carbene ligand having a N-containing ring fused to the imidazole ring are provided. In particular, the N-containing ring fused to the imidazole ring may contain one nitrogen atom or more than one nitrogen atom. These compounds may demonstrate high photoluminescent (PL) efficiency, Gaussian emission spectra, and/or short excited state lifetimes. These materials may be especially useful as blue phosphorescent emitters.

Abstract: Provided are a compound of formula Ir(LA)x(LB)y(LC)z wherein LA has