Abstract: Provided are organometallic compounds comprising a first ligand LA which may be a bidentate, tridentate, tetradentate, pentadentate, or hexadentate ligand and which forms at least one 5-membered ring with a metal atom. 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: A compound including a first ligand LA of Formula I, is provided. In Formula I, rings A, B, C, and D are each a 5-membered or 6-membered ring; L1 is selected from CR, SiR, GeR, N, or B; L2 is selected from CRR?, SiRR?, GeRR?, NR, O, S, Se, or C?X; X is CRR?, O, or S; each of Z1, Z2, Z3, Z4, Z5, Z6, Z7, Z8, and Z9 is independently C or N; each R, R?, RA, RB, RC, and RD is independently hydrogen or a General Substituent; LA is coordinated to a metal M through the indicated dashed lines; metal M may be coordinated to other ligands; and any two adjacent R, R?, RA, RB, RC, and RD may be joined or fused to form a ring. Formulations, OLEDs, and consumer products including the compound are also provided.

Abstract: A compound comprising a hexadentate ligand of Formula I coordinated to a metal selected from the group consisting of iridium, rhodium, and osmium wherein rings A, D, and E are independently a 5-membered or 6-membered heteroaryl ring, or a 6-membered aryl ring; rings B, C, and F are independently 6-membered heteroaryl ring, or a 6-membered aryl ring; T1, T2, T3, T4, T5, and T6 are independently selected from C or N, wherein two to four of T1 to T6 are C, and two to four of T1 to T6 are N; Z1, Z2, Z3, and Z4 are independently selected from C or N, wherein if Z1 and Z2 are each N then T1 is a carbene carbon and two of T2 to T6 are N; J1 to J11 are independently selected from C or N, wherein if any one of J1 to J4 is N then ring F has no more than three N, if any one of J5 to J7 is N then ring B has no more than three N, or if any one of J8 to J11 is N then is N then ring C has no more than three N; Y1 is selected from the group consisting of CR1, SiR1, B, or N; Y2 is selected from the group consisting of C

Abstract: A compound having the formula Ir(LA)(LB), where LA has a structure of Formula I and LB is a bidentate ligand is disclosed. In the structure of Formula I, rings A, B, C, and D are each independently 5- or 6-membered carbocyclic or heterocyclic rings; each of Z1 to Z8 is C or N; LA has at least one Ir—C bond; L is CR or N; each R1 R2, R3, and R4 is independently hydrogen or one of the preferred general substituents; and any two substituents may be joined or fused together to form a ring. Organic light emitting devices, consumer products, and formulations containing the compounds are also disclosed.

Abstract: A compound of Formula I or Formula II wherein Y is selected from the group consisting of O, S, and NRN; and (a) L1 and L2 are the same or different and are each a mono-anionic bidentate ligand; and R is selected from the group consisting of hydrogen, deuterium, halogen, alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carboxylic acid, ether, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof; or (b) R joins with L1 of the Formulae I or II to form a ring B1 of formula B and formula C, respectively, and L2 is L3 and L3 is a tridentate ligand of formula D wherein ring C, ring D, and ring E are each independently selected from the group consisting a 5-membered aryl, a 5-membered heteroaryl, a 6-membered aryl, and a 6-membered heteroaryl; X1 to X4 are independently selected from C or N, and no more than two of the X1 to X4 is N; Z1 to Z7 are

Abstract: A compound of the formula MLALB where ligand LA is of Formula I, and ligand LB is of Formula II below. M is selected from Os(II) or Ru(II), and the compound MLALB has a formal neutral charge; and rings A, B, C, D, E, and F are independently a 5-membered or 6-membered aromatic ring, and RA, RB, RC, RD, RE,and RF each independently represent mono to the maximum allowable substitution, or no substitution. L1, L2, L3, and L4 independently represent a single bond or an organic linking group; W1, W2, W3, and W4 are independently selected from carbon or nitrogen; Y1, Y2, Y3, and Y4 are independently selected from carbon or nitrogen; and Z1, Z2, and Z3 are independently selected from carbon or nitrogen, and at least one of Z1, Z2, and Z3 is nitrogen. An organic electroluminescent device that includes an anode, a cathode, and an organic layer comprising a compound of the formula MLALB where ligand LA is of Formula I, and ligand LB is of Formula II above.

Abstract: A compound comprising a hexadentate ligand of Formula I coordinated to a metal selected from the group consisting of iridium, rhodium, and osmium; wherein rings A, B, C, D, E, and F are independently a 5-membered or 6-membered heteroaryl ring, or a 6-membered aryl ring; T1, T2, T3, T4, T5, and T6 are independently selected from C or N, wherein two to four of T1 to T6 are C, and two to four of T1 to T6 are N; Z1, Z2, Z3, and Z4 are independently selected from C or N, wherein if Z1 and Z2 are each N then T1 is a carbene carbon and two of T2 to T6 are N; Y1 and Y2 are independently selected from the group consisting of CR, SiR, B, or N; W1-W7 are independently selected from the group consisting of a direct bond, BR, BRR?, NR, PR, O, S, Se, C?X, S?O, SO2, CR, CRR?, SiRR?, GeRR?, alkyl, cycloalkyl, aryl, heteroaryl, and combinations thereof; wherein X is selected from the group consisting of O, S, Se, NR?, and CR?R??; RA to RF independently represent mono to the maximum allowable substitution, or no substitu

Abstract: The present invention provides compounds comprising a tridentate ligand LA wherein LA is complexed to a metal, M. The metal complexes comprising the tridentate ligand LA may be useful in an organic layer disposed between the anode and the cathode in an organic light emitting device (OLED).

Abstract: Provided are compounds having a first ligand LA of that are useful in OLEDs as emitters.

Abstract: This invention discloses heteroleptic iridium complexes containing two tridentate ligands with three five- and one six-cyclometalated rings, showing desired device performance properties.

Abstract: A compound of Formula I or Formula II wherein Y is selected from the group consisting of O, S, and NV; and (a) L1 and L2 are the same or different and are each a mono-anionic bidentate ligand; and R is selected from the group consisting of hydrogen, deuterium, halogen, alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carboxylic acid, ether, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof; or (b) R joins with L1 of the Formulae I or II to form a ring B1 of formula B and formula C, respectively, and L2 is L3 and L3 is a tridentate ligand of formula D wherein ring C, ring D, and ring E are each independently selected from the group consisting a 5-membered aryl, a 5-membered heteroaryl, a 6-membered aryl, and a 6-membered heteroaryl; X1 to X4 are independently selected from Cor N, and no more than two of the X1 to X4 is N; Z1 to Z7 are ind

Abstract: This invention discloses iridium complexes containing one tetradentate ligand and one bidentate ligand. The heteroleptic iridium complexes showed desired properties such as good EQE, LT, and CIE.

Abstract: A compound comprising a hexadentate ligand of Formula I coordinated to a metal selected from the group consisting of iridium, rhodium, and osmium wherein rings A, D, and E are independently a 5-membered or 6-membered heteroaryl ring, or a 6-membered aryl ring; rings B, C, and F are independently 6-membered heteroaryl ring, or a 6-membered aryl ring; T1, T2, T3, T4, T5, and T6 are independently selected from C or N, wherein two to four of T1 to T6 are C, and two to four of T1 to T6 are N; Z1, Z2, Z3, and Z4 are independently selected from C or N, wherein if Z1 and Z2 are each N then T1 is a carbene carbon and two of T2 to T6 are N; J1 to J11 are independently selected from C or N, wherein if any one of J1 to J4 is N then ring F has no more than three N, if any one of J5 to J7 is N then ring B has no more than three N, or if any one of J8 to J11 is N then is N then ring C has no more than three N; Y1 is selected from the group consisting of CR1, SiR1, B, or N; Y2 is selected from the group consisting of C

Abstract: A compound having the formula Ir(LA)(LB), where LA has a structure of Formula I and LB is a bidentate ligand is disclosed. In the structure of Formula I, rings A, B, C, and D are each independently 5- or 6-membered carbocyclic or heterocyclic rings; each of Z1 to Z8 is C or N; LA has at least one Ir—C bond; L is CR or N; each R1 R2, R3, and R4 is independently hydrogen or one of the preferred general substituents; and any two substituents may be joined or fused together to form a ring. Organic light emitting devices, consumer products, and formulations containing the compounds are also disclosed.

Abstract: A compound of the formula MLALB where ligand LA is of Formula I, and ligand LB is of Formula II below. M is selected from Os(II) or Ru(II), and the compound MLALB has a formal neutral charge; and rings A, B, C, D, E, and F are independently a 5-membered or 6-membered aromatic ring, and RA, RB, RC, RD, RE, and RF each independently represent mono to the maximum allowable substitution, or no substitution. L1, L2, L3, and L4 independently represent a single bond or an organic linking group; W1, W2, W3, and W4 are independently selected from carbon or nitrogen; Y1, Y2, Y3, and Y4 are independently selected from carbon or nitrogen; and Z1, Z2, and Z3 are independently selected from carbon or nitrogen, and at least one of Z1, Z2, and Z3 is nitrogen. An organic electroluminescent device that includes an anode, a cathode, and an organic layer comprising a compound of the formula MLALB where ligand LA is of Formula I, and ligand LB is of Formula II above.

Abstract: A compound comprising a tridentate ligand LA selected from Formula I. The ligand LA is complexed to a metal M. wherein Z1 and Z2 are independently C or N, wherein if Z1 is C, then Z2 is N, or if Z1 is N then Z2 is C; X1, X2, X3, and X4 are independently selected from CR1 or N, and R1 can be the same or different for each of X1, X2, X3, and X4; X5, X6, and X7 are independently selected from CR2 or N, and R2 can be the same or different for each of X5, X6, and X7; X8 is independently selected from CR3 or N; and Y is selected from CRY or N, and RY is selected from hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, cycloalkenyl, heteroalkenyl, aryl, heteroaryl, nitrile, and combinations thereof, or optionally, RY can form a ring with R3. An OLED that includes an anode, a cathode, and an organic layer disposed between the anode and the cathode. The organic layer will include a compound of Formula I, and a consumer product that includes the OLED.

Abstract: The present invention includes a series of novel osmium bis(tridenatate) complexes with emission profiles in the near-infrared region.

Abstract: This invention discloses iridium complexes containing one tetradentate ligand and one bidentate ligand. The heteroleptic iridium complexes showed desired properties such as good EQE, LT, and CIE.

Abstract: This invention discloses heteroleptic iridium complexes containing two tridentate ligands with three five- and one six-cyclometalated rings, showing desired device performance properties.