Patent ID: 11919916
Assignee: UNIVERSAL DISPLAY CORPORATION
Field: Organic fine chemistry (Chemistry)
Classification: CPC C  H | IPC C  H

Claim 0:
1. A compound having a formula Ir(LA)(LC)2:
wherein ligand LA is, wherein ligand LC is, wherein the compound is heteroleptic;
wherein X1, X2, X3, X4, A1, A2, A3, A4, A5, A6, A7, and A8 are C or N;
wherein at least one of A1, A2, A3, A4, A5, A6, A7, and A8 is N;
wherein ring B is bonded to ring A through a C—C bond;
wherein Ir is bonded to ring A through an Ir—C bond;
wherein X is O, S, or Se;
wherein rings C, and D are each independently a 5 or 6-membered carbocyclic or heterocyclic ring;
wherein RA represents mono, or di-substitution, or no substitution;
wherein RB represents di, tri, or tetra-substitution;
wherein RC, RD, and R4 each independently represent mono, di, tri, or tetra-substitution, or no substitution;
wherein two adjacent RB form a six-member aromatic carbocyclic or heterocyclic ring E fused to ring B; wherein, when ring E is heterocyclic, the only heteroatom is nitrogen; wherein ring E can be further substituted by RE; wherein at least one RE is not hydrogen or deuterium; and wherein RE represents mono, di, tri, or tetra-substitution;
wherein each of RA, RB, RC, RD, RE, and R4 are independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof; and
wherein any adjacent substituents of RC, and RD are optionally joined to form a fused ring.