Abstract: Provided are new compositions of matter for host materials in OLEDs by incorporating deuterated moieties in the organic molecules. Also provided are formulations comprising these deuterated compounds. Further provided are OLEDs and related consumer products that utilize these deuterated compounds.

Abstract: A compound having a structure of Formula I In Formula I, M is Pd or Pt; each of X1 to X12 is independently C or N; ring A is a 5-membered or 6-membered ring; K1 and K2 are selected from a direct bond, O, S, and NR; L1 is an organic linker; Y1 is selected from O, S, BR, PR, Se and NRY; each R, RY, RA, RB, RC, and RD is hydrogen or a substituent; and any two substituents can be joined or fused to form a ring. Further provided are OLEDs and related consumer products that utilize these compounds.

Abstract: Disclosed is a compound including a ligand LA of Formula I, In Formula I, moiety B is a monocyclic or polycyclic ring structure comprising 5- and/or 6-membered rings; Y is selected from O, S, NR, and CRR?; Z is carbon or nitrogen; each R, R?, RA, and RB is independently hydrogen or a substituent; LA is coordinated to a metal M; and any two adjacent R, R?, RA, and RB can be joined or fused together to form a ring. Formulations, organic light emitting diodes, and consumer products including the compound are also disclosed.

Abstract: A compound having a structure of Formula I, is provided. In Formula I, two of Z1, Z2, Z3, and Z4 are C and the other two are N; each of X1 to X16 is independently C or N; each of L1 and L2 is independently a direct bond or a linker; one of L1 and L2 is present; M is Pd or Pt; each RA, RB, RC, and RD is independently hydrogen or a substitutent selected from the General Substituent; and any two of RA, RB, RC, and RD can be joined or fused together to form a ring. Formulations, OLEDs, and consumer products including the compound of Formula I are also disclosed.

Abstract: A compound having a first ligand LA including a structure of Formula I, is provided. In Formula I, each of X1 to X6 is independently C or N; X and Y are selected from a group of linking atoms; K is a direct bond or a linking atom; each R is hydrogen or a General Substituent defined therein; 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: Provided are boron-containing compounds. Also provided are formulations comprising these boron-containing compounds. Further provided are OLEDs and related consumer products that utilize these boron-containing compounds.

Abstract: A compound having a first ligand LA comprising a structure of Formula I, is provided. In the compound, each of moiety A and moiety B is a monocyclic ring or a polycyclic fused ring system; at least one RA or RB has a structure of Formula II, wherein the dashed line represents a bond to moiety A or moiety B, respectively; moiety D is a polycyclic fused ring system; each of Z1 to Z4 and X1 to X5 is C or N; L 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; and the dashed lines of Formula I are coordinated to a metal M. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: Provided are organometallic compounds comprising a central metal atom and a ligand comprising an imidazole which fused to a monocyclic ring or a polycyclic fused ring system, wherein the monocyclic ring or each ring of the polycyclic fused ring system is independently a 5-membered to 10-membered carbocyclic or heterocyclic ring. 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: Provided are new compositions of matter for host materials in OLEDs by incorporating deuterated moieties in the organic molecules. Also provided are formulations comprising these deuterated compounds. Further provided are OLEDs and related consumer products that utilize these deuterated compounds.

Abstract: A compound having a first ligand LA with a structure of Formula I, where two consecutive ones of X1 to X8 are C and are joined to a structure of Formula II, is provided. In Formula I, moiety A is a monocyclic ring or a polycyclic fused ring system; each of Z1 to Z2 and X1 to X12 is C or N; each of Y1 and Y2 is a linker; K is a direct bond or a linker; each substituent is hydrogen or a General Substituent defined herein; and LA is coordinated to a metal M. Also provided is a compound having a formula Ir(LA*)x(LB*)y(LC*)z as defined herein. Formulations, OLEDs, and consumer products containing these compounds are further provided.

Abstract: Provided are compounds of formula Ir(LA)m(LB)n, where m and n are each independently 1 or 2; and m+n=3; where LA has a structure of Formula I and LB has a structure of Formula II that are useful as emitters in OLEDs. Also provided are formulations comprising these compounds. Further provided are OLEDs and related consumer products that utilize these compounds.

Abstract: A heteroleptic compound of Formula Ir(LA)x(LB)y(LC)z is provided where first ligand LA comprises a structure of Formula I, ligand LB comprises a structure selected from the group consisting of: and ligand LC is a bidentate ligand. In these structures, moiety A is a monocyclic ring or a polycyclic fused ring system; moiety B is a polycyclic fused ring system; each of Z1 to Z4 and X1 to X8 is C or N; each of K1 and K2 is a direct bond or a linking group; K is a linking group; L is a direct bond or a linking group; Y is a linking group; and each substituent is H or a General Substituent defined herein. Also provided is a metal coordination complex that comprises a ligand selected from the group LB consisting of LB-1, LB-2, LB-3, LB-4, LB-5, LB-6, and LB-7 as defined herein. Formulations, OLEDs, and consumer products containing the compounds are further provided.

Abstract: A compound of formula Ir(LA)x(LB)y including a structure of Formula I, is provided herein. In Formula I, each of x and y is independently 1 or 2, and x+y=3; each of X1 to X17 is C or N; each R1, R2, R3, R4, RA, RB, RC, RD, and RE is hydrogen or a General Substituent defined herein; at least one of R1 to R4 is not hydrogen, deuterium, or halogen; and the combination of a pair of one R1 or R2 and one R3 or R4 has a combined Van der Wall surface area greater than 210.6 ?2 and one of the pair has a cone angle of at least a target cone angle, where the target cone angle is 35 degrees. Formulations, OLEDs, and consumer products containing the compound are also provided.

Abstract: High performance OLED that includes deuterated compounds in the emissive layer are disclosed. The OLED includes an anode; a cathode; and an emissive layer, disposed between the anode and the cathode. In the OLED, the emissive layer includes a first phosphorescent emitter and a first host; the first phosphorescent emitter is a metal complex; the first host is partially or fully deuterated; and at least one additional condition is true.

Abstract: Compounds of Formula I, are provided.

Abstract: Provided are novel organic compounds having a structure of Formula I: Also provided are formulations having these organic compounds. Further provided are OLEDs and related consumer products that utilize these organic compounds.

Abstract: Provided are compounds of formula Ir(LA)m(LB)n, where m and n are each independently 1 or 2; and m+n=3; where LA has a structure of Formula I and LB has a structure of Formula II that are useful as emitters in OLEDs. Also provided are formulations comprising these compounds. Further provided are OLEDs and related consumer products that utilize these compounds.

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

Abstract: Compounds of Formula I, are provided. In Formula I, M is Pd or Pt; each of X1 to X14 is C or N; one of Z1 and Z2 is C and the other is N; Y is selected from O, S, Se, N*R, CRR?, SiRR?, or GeRR?; K1 is a direct bond, O, or S; each R, R?, RA, RB, RC, and RD is independently hydrogen or a substituent; at least one of R, R?, RA, RB, RC, or RD is a substituent R*; and (i) R* comprises a 5-membered or 6 -membered heterocyclic ring, or (ii) R* Formula Ia: Formula Ia; R1, R2, R3, R4, RY and RZ is independently hydrogen or a General Substituent defined herein, and at least one is not hydrogen. Formulations, OLEDs, and consumer products including the compound are also provided.

Abstract: A heteroleptic compound of formula Ir(LA)x(LB)y(LC)z where LA comprises LB comprises a structure of and ligand LC is a bidentate ligand. In addition, moiety A is a monocyclic ring or a polycyclic fused ring system; each of Z1, Z2, and X1 to X13 is C or N; each of Y1 and Y2 is a linking group; Z is C, Si, or Ge; each R substituent is hydrogen or a General Substituent defined herein; and any two substituents may be joined or fused to form a ring. Formulations, OLEDs, and consumer products containing the compound are also provided.