Abstract: A compound comprising a ligand LA of Formula I coordinated to a metal M as represented by the dotted lines wherein ring A is a 5-membered or 6-membered carbocyclic or heterocyclic ring, and ring B is a multicyclic ring system comprising four to eight fused 5-membered or 6-membered, carbocyclic or heterocyclic rings; wherein the ring B includes a structure of Formula II wherein ring C is a 5-membered or 6-membered carbocyclic or heterocyclic ring, and the dotted lines of Formula II represent fusion of the structure of Formula II as part of the multicyclic ring system of ring B; T1, T2, and T3 are independently selected from N or C; and L is a linker L2-L1 with L2 and L1 independently selected from the group consisting of O, S, NRN, CR1R2, CR3R4, SiR1R2, and SiR3R4; wherein at least one of L1 or L2 is CR1CR2 or SiR1R2; and the metal M is selected from the group consisting of Ir, Rh, Re, Ru, Os, Pt, Pd, Au, and Cu.

Abstract: Provided are macrocyclic compounds comprising at least one eight-membered ring and at least four further 5-membered or 6-membered carbocyclic and heterocyclic rings which may be further substituted. Also provided are formulations comprising these macrocyclic compounds. Further provided are organic light emitting devices (OLEDs) and related consumer products that utilize these macrocyclic compounds.

Abstract: In some embodiments, compound comprising a first ligand LA having a structure of Formula I, is provided. In Formula I, each of moiety A and moiety C is a monocyclic ring or a polycyclic fused ring system; T is Si or Ge; R1 and one RA substituent are joined to form a ring A?; each R1, RA, and RC is a hydrogen or a General Substituent defined herein; and LA is coordinated to a metal M selected from Ir, Rh, Re, Ru, Os, Pt, Pd, Ag, Au, and Cu. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: A compound having the formula Ir(LA)n(LB)3-n is disclosed wherein LA is an aza-DBF ligand and LB is an alkyl-substituted phenylpyridine ligand, wherein the compound has a structure according to Formula I: wherein each of A1 to A8 comprise carbon or nitrogen; wherein at least one of A1 to A8 is nitrogen; wherein ring B is bonded to ring A through a C—C bond; wherein the iridium is bonded to ring A through a Ir—C bond; wherein X is O, S, or Se; wherein R? and R? each independently represent mono-, di-substitution, or no substitution; wherein any adjacent substitutions in R?, R?, R1, R2, R3, R4, R5, and R6 are optionally linked together to form a ring; wherein R1, R2, R?, and R? are each independently selected from a variety of substituents; wherein R3, R4, R5, and R6 are each independently selected from the group consisting of hydrogen, deuterium, alkyl, cycloalkyl, and combinations thereof; wherein n is an integer from 1 to 3; and wherein total number of carbons in at least one of the pairs R3 and R4, and

Abstract: Provided are organometallic compounds. Also provided are formulations comprising these organometallic compounds. Further provided are OLEDs and related consumer products that utilize these organometallic compounds.

Abstract: A composition of materials including a first compound having a structure according to Formula I

Abstract: Provided are organometallic compounds. Also provided are formulations comprising these organometallic compounds. Further provided are OLEDs and related consumer products that utilize these organometallic compounds.

Abstract: A compound having the formula Ir(LA)n(LB)3-n is disclosed wherein LA is an aza-DBF ligand and LB is an alkyl-substituted phenylpyridine ligand, wherein the compound has a structure according to Formula I: wherein each of A1 to A8 comprise carbon or nitrogen; wherein at least one of A1 to A8 is nitrogen; wherein ring B is bonded to ring A through a C—C bond; wherein the iridium is bonded to ring A through a Ir—C bond; wherein X is O, S, or Se; wherein R? and R? each independently represent mono-, di-substitution, or no substitution; wherein any adjacent substitutions in R?, R?, R1, R2, R3, R4, R5, and R6 are optionally linked together to form a ring; wherein R1, R2, R?, and R? are each independently selected from a variety of substituents; wherein R3, R4, R5, and R6 are each independently selected from the group consisting of hydrogen, deuterium, alkyl, cycloalkyl, and combinations thereof; wherein n is an integer from 1 to 3; and wherein total number of carbons in at least one of the pairs R3 and R4, and

Abstract: A compound comprising a first ligand LA of Formula I, is provided. In Formula I, each of X1 to X12 is C or N; Y is a linking group; each RA, RB and RC can be hydrogen or a substituent; at least one RA, RB or RC comprises an electron-withdrawing group; and LA forms a 5-membered chelate ring with an Ir atom via the dashed lines. In addition a number of conditions must be met based on whether or not any pair of RA is joined to form a ring. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: Provided are transition metal compounds having 5-membered carbocyclic or heterocyclic ring in a unique configuration of fused rings per Formula I The compounds show improved phosphorescent emission in red to near IR region and are useful as emitter materials in organic electroluminescence device.

Abstract: Novel compounds comprising heteroleptic iridium complexes are provided. The compounds have a particular combination of ligands which includes a single pyridyl dibenzo-substituted ligand. The compounds may be used in organic light emitting devices, particularly as emitting dopants, to provide devices having improved efficiency, lifetime, and manufacturing.

Abstract: A compound, Ir(LA)(LB)(LC), having a structure of Formula I, is provided. In Formula I, LA includes moieties E and F, LB includes moieties A and B, and LC includes moieties C and D. In addition, moieties A, B, C, D, E, and F are independently monocyclic rings or polycyclic fused ring systems; each of Z1 to Z6 is C or N; three of Z1 to Z6 form covalent bonds to Ir, while the remaining three form dative bonds to Ir; one of Z2 and Z3 forms a covalent bond to Ir, and the other forms a dative bond to Ir; each of L1, L2, L3, and L4 is a direct bond or an organic linker; and each RA, RB, RC, RD, RE, and RF is hydrogen or a General Substituent.

Abstract: A composition of materials including a first compound having a structure according to Formula I

Abstract: A compound of Formula I wherein Y is selected from the group consisting of NAr, O, S, and Se; Ar is an optionally substituted aryl or optionally substituted heteroaryl; and Z1 to Z8 are independently selected from C or N, wherein at least one of Z2 or Z3 is C, and at least one of Z6 or Z7 is C. R is selected from the group consisting of deuterium, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, aryl, heteroaryl, nitrile, isonitrile, sulfanyl, and combinations thereof; or optionally R can join with Ar to from a ring; and with the provisios that R is not N-methyl-benzimidazole, and the compound is not compound A.

Abstract: Novel compounds comprising heteroleptic iridium complexes are provided. The compounds have a particular combination of ligands which includes a single pyridyl dibenzo-substituted ligand. The compounds may be used in organic light emitting devices, particularly as emitting dopants, to provide devices having improved efficiency, lifetime, and manufacturing.

Abstract: Ligands with fused spirocyclic substitutions and metal complexes formed with such ligands and having improved performance in OLED applications are disclosed.

Abstract: A compound comprising a ligand LA coordinated to a metal M, the ligand LA selected from the group consisting of Formula I, Formula II, and Formula III ring A is a 5- or 6-membered carbocyclic or heterocyclic ring; wherein ring A of Formula I connects to ring B at X1, X2, or X3 to form a five-membered chelate ring with the metal; Z1 and Z2 are independently selected from C or N; and X1 to X10 are independently selected from C or N. An organic light emitting device (OLED) comprising an anode, a cathode and an organic layer disposed between the anode and the cathode, the organic layer comprising a compound selected from Formula I, Formula II, or Formula III, and a consumer product comprising the OLED.

Abstract: A compound of Formula Ir(LA)x(LB)y(LC)z is provided, where x is 1 or 2, each of y and z is 0, 1, or 2, at least one of y and z is not 0, and x+y+z=3. Ligand LA has a structure of Formula I, where LB and LC are bidentate ligands; LA, LB, and LC are different; ring B is a 5-membered or 6-membered ring; each of X1 to X10 is C or N; ring C is bonded to ring A1 by a C; each RA, RB, and RC is independently hydrogen or a General Substituent; with the exception that no RB can be joined or fused to an RC, any two substituents may be joined or fused to form a ring; and at least two RC substituents are joined together to form a fused ring. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: A compound of Formula I, is provided where moieties B and D are monocyclic or polycyclic rings; M is Pt or Pd; each of X1 to X7, Z1, and Z2 is C or N; Y1 and Y2 are each independently linking groups; L1 and L2 are each independently absent a bond, a direct bond, or a linking group; K is selected from the group consisting of a direct bond, O, S, N(R?), P(R?), B(R?), C(R?)(R?), and Si(R?)(R?). Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: A compound comprising a first ligand LA of Formula I, is provided. In Formula I, each of X1 to X12 is C or N; Y is a linking group; each RA, RB and RC can be hydrogen or a substituent; at least one RA, RB or RC comprises an electron-withdrawing group; and LA forms a 5-membered chelate ring with an Ir atom via the dashed lines. In addition a number of conditions must be met based on whether or not any pair of RA is joined to form a ring. Formulations, OLEDs, and consumer products containing the compound are also provided.