Abstract: A compound comprising a first ligand LA of Formula I, is provided. In Formula I, moiety C is a monocyclic ring or fused polycyclic system; each of X1 to X6 is C or N; K is a direct bond or a linker; at least one of RB or RC has the formula -L-SiR1R2R3, or -L-GeR1R2R3; L is a direct bond or an organic linker; each R?, R?, R1, R2, R3, RA, RB, and RC is hydrogen or a General Substituent defined herein; LA is coordinated to a metal M by the dashed lines in Formula I; and M has an atomic mass of at least 40 and may be coordinated to other ligands. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: Provided are compounds of Formula Ir(LA)x(LC)y wherein: ligand LA has Formula I? ?and ligand LC has Formula II?

Abstract: A compound comprising a first ligand LX comprising a structure of Formula IV, In Formula IV, ring F is a 5- or 6-membered ring; Z3, A1, A2, and A3 are C or N; A4 is C and ring F bonds to ring I at A4; n is 0 or 1; two adjacent atoms of A5 to A8 are C; adjacent substituents selected from RH and RI join or fuse together to form at least two fused heterocyclic or carbocyclic rings; Y is a linking group; and LX is complexed to a metal M. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: A compound of formula Ir(LA)x(LB)y(LC)z, where the a first ligand LA has a structure of Formula I, is provided. In Formula I, moiety A is a monocyclic ring; each of X1 to X10 and Z1 is C or N; K1 and K2 are each a direct bond or a linker; each R?, R?, RA and RB is hydrogen or a General Substituent defined herein; LB and LC are bidentate ligands; x=1, 2, or 3, y and z are each 0, 1, or 2, and x+y+z=3. Formulations, OLEDs, and consumer products comprising the compound are also provided.

Abstract: A compound comprising a ligand LA of Formula I, where G has a structure of is disclosed. In ligand LA, Ring C is a 5-membered or 6-membered ring; K is a direct bond, O, or S; when K is O or S, X6 is C; each of RA, RB, and RC is H or a substituent, and can be joined together to form a ring; each of X1 to X6 is independently C or N; X1 is C if it is connected to ring C; the RB substituents of at least two adjacent ones of X2 to X5 are joined to form a ring; and the ligand LA is complexed to Ir through the two indicated dash lines to form a 5-membered chelate ring. Organic light emitting devices, consumer products, formulations, and chemical structures containing the compounds are also disclosed.

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

Abstract: The present disclosure provides compound having a first ligand LA, including those comprising a structure of Formula A, In the compound, each of X1P to X6P is C, N, or B, where at least one of X1P to X6P is N or B; at least four substituent pairs selected from (R1, R2), (R2, R3), (R3, R4), (R4, R5), (R5, R6), and (R6, R1) are joined or fused together to form rings fused to the center ring P; each of R1, R2, R3, R4, R5, and R6 is independently a hydrogen or a General Substituents defined herein; LA is coordinated to a metal M to form a 5-membered or 6-membered chelate ring; and any two substituents may be joined or fused to form a ring. Formulations, OLEDs, and consumer products containing such compounds are also provided.

Abstract: A compound having a first ligand LA including a structure of Formula I, is provided. In Formula I, each of moiety B and moiety D is a monocyclic ring or a polycyclic fused ring system; each of X1 to X5 is C or N; ring C is bonded to ring A by a C; K is a direct bond or a linking group; each RA, RB, RC, and RD is hydrogen or a General Substituent defined herein; at least one RC or RD comprises an electron-withdrawing group; and LA is coordinated to a metal M through the dashed lines. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: A compound having a first ligand LA comprising a structure of Formula I, is provided. In Formula I, moiety A is a monocyclic ring or a polycyclic fused ring system; Z1 and Z2 are each C or N; each of Q1 to Q4 is C or N; K1 and K2 are each independently a direct bond or a linking group; two RA substituents are joined to form a structure of Formula II, fused to moiety A, wherein n is 0, 1, 2, or 3; two RB substituents are joined to form a cyclic moiety B1 fused to ring B; and each R?, R?, RA, RB, and RC is hydrogen or a General Substituent defined herein. Formulations, OLEDs, and consumer products containing the same are also provided.

Abstract: Novel metal complexes incorporating boron-containing aromatic compounds useful as a phosphorescent OLED material are disclosed.

Abstract: A compound comprising a ligand LA comprising a moiety L having a structure of Formula I is provided. In Formula I, LA coordinated to a metal M; A1 is selected from B, N, P, P?O, P?S, Al, Ga, SiR?, GeR?, and SnR?; where rings A, B, and C are 5- or 6-membered rings; Y1, Y2, and Y3 are selected from direct bonds, the metal M, and a variety of linkers; a+b+c=2 or 3; and one of a number of specific conditions is met. OLED devices, consumer products, and formulations including the compound are also provided.

Abstract: A compound having a first ligand LA including a structure of Formula I, where at least one RA or RB includes comprises a structure of Formula II, is provided. In Formulas I and II, each of moiety A and moiety B is a monocyclic ring or a polycyclic fused ring system; ring C is a 4- to 10-membered heterocyclic ring; XC is CRC1; X is Si or Ge; each of X1 to X4, Z1, and Z2 is C or N; L is a direct bond or a linker, each of K1, K2, and LK is a direct bond or a linker, each R moiety is hydrogen or a General Substituent defined herein; and LA is coordinated to a metal M, having an atomic mass of at least 40. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: A compound having a first ligand LA comprising a structure of Formula I, where at least one of moiety B or moiety C has a structure of Formula II, fused thereto. In the compound, each of moiety A and moiety B is a carbocyclic or heterocyclic ring; each of moiety D, moiety E and, if present, moiety C is a monocyclic ring or a polycyclic fused ring system; if moiety A is a 6-membered ring and moiety B is a 5-membered ring, then moiety C is present; each of Z1 to Z6 is independently C or N; L1 is a direct bond or a linking group; Y is a linking group; each of K1 and K2 is a direct bond or a linking group; each substituent is hydrogen or a General Substituent defined herein; and LA is coordinated to a metal M. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: A homoleptic or heteroleptic compound of Formula Ir(LA)x(LB)y(LC)z is provided where LA comprises a structure of Formula I, LB comprises a structure of Formula II, and LC comprises a structure of Formula III, In Formula I, Formula II, and Formula III, each of Z1 to Z12 is C or N; each of moiety A, and moiety C to moiety F is a monocyclic ring or a polycyclic fused ring system; at least one of RA to RF comprises a cyano-substituted alkyl; each RA to RF is hydrogen or a General Substituent defined herein; and at least one of the following is true: (1) moiety B is comprised of four or more fused rings; (2) moiety B is comprised of three fused rings, and at least one RA or RB is a cyclic group. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: Provided are compounds having a first ligand LA having a structure of Formula I: that are useful in OLED application and provide improved OLED properties.

Abstract: A compound including a first ligand LA of Formula I, is disclosed. In Formula I, ring B is a 5- or 6-membered ring; X1, X2, and X3 are each CRA or N; R is a 5- or 6-membered carbocyclic or heterocyclic ring, which can be further fused or substituted; and (1) when ring B is an unfused 6-membered ring, X1 and X2 are N, and X3 is C; and (2) when ring B is a fused 6-membered ring, ring B has the structure of Formula II, In this structure, the wavy line indicates the point of connection to ring A; Q1 to Q6 are each C or N; and, when proviso (2) applies, (I) at least one of X1, X2, and X3 is N; or (II) R is two or more fused or unfused 5- or 6-membered carbocyclic or heterocyclic rings, or (III) both.

Abstract: A compound including a first ligand LA of Formula I, is disclosed. In Formula I, ring B is a 5- or 6-membered ring; X1, X2, and X3 are each CRA or N; R is a 5- or 6-membered carbocyclic or heterocyclic ring, which can be further fused or substituted; and (1) when ring B is an unfused 6-membered ring, X1 and X2 are N, and X3 is C; and (2) when ring B is a fused 6-membered ring, ring B has the structure of Formula II, In this structure, the wavy line indicates the point of connection to ring A; Q1 to Q6 are each C or N; and, when proviso (2) applies, (I) at least one of X1, X2, and X3 is N; or (II) R is two or more fused or unfused 5- or 6-membered carbocyclic or heterocyclic rings, or (III) at least ring A or R is substituted with a partially or fully deuterated alkyl or partially or fully deuterated cycloalkyl group.

Abstract: A compound including a first ligand LA of is disclosed. In the structure of Formula I, one of L1 and L2 is C, and the other is N; Y1 to Y14 are each C or N; at least two adjacent Y7, Y8, Y9, and Y10 are carbon atoms that are fused to a structure of Z1 and Z2 are each O, S, Se, NR, CRR?, or SiRR?; and each R, R?, RA, RB, RC, and RD is hydrogen or a substituent; and any two substituents may be joined or fused together to form a ring. In the compound, LA is complexed to a metal M by L1 and L2, and M has an atomic weight greater than 40. Organic light emitting devices and consumer products containing the compounds are also disclosed.

Abstract: Provided are organometallic compounds comprising a ligand which is at least a two-dentate ligand which comprises at least one 5-membered nitrogen containing heterocyclic ring, the nitrogen of which is bonded to the central 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 comprising a first ligand LA of Formula I, and a structure of Formula II, are provided. In Formulas I and II, each of moiety A, moiety B, moiety C, and moiety D is a monocyclic or polycyclic fused ring system; ring H is a ring; one or more of moiety A, moiety B, and ring H may be or may comprise one or more of moiety C, moiety D, or ring G; each of X1 and X2 is C or N; Z1 is C, Si, or Ge; each of Z2 to Z5 is C, Si, Ge, N, B, or P; W is O, S, Se, N, B, P, C, Si, In, or Ge; each of K1 and K2 is a direct bond or a linker; and T is a one or two atom linker. Formulations, OLEDs, and consumer products containing the compound are also provided.