Patent ID: 11882759
Assignee: UNIVERSAL DISPLAY CORPORATION
Field: Organic fine chemistry (Chemistry)
Classification: CPC H  C | IPC C  H

Claim 9:
10. The compound of claim 1, wherein the ligand LB is present and is independently selected from the group consisting of:, wherein the dashed lines represent coordination to the metal M;
X1 to X13 are independently selected from the group consisting of C and N;
X is selected from the group consisting of BR′, NR′, PR′, O, S, Se, C═O, S═O, SO2, CR′R″, SiR′R″, and GeR′R″;
R′ and R″ are optionally fused or joined to form an aliphatic, aryl or heteroaryl ring;
Ra, Rb, Rc, and Rd may represent from mono substitution to the possible maximum number of substitution, or no substitution;
R′, R″, Ra, Rb, Rc, and Rd are are independently hydrogen or a substituent selected from the group consisting of deuterium, halide, alkyl, cycloalkyl, heteroalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, nitrile, isonitrile, phosphino, carbonyl, sulfanyl, and any combination of substituents thereof, or any two adjacent Ra, Rb, Rc, and Rd can join to form an aliphatic, aryl or heteroaryl ring, which is optionally substituted.