Patent ID: 11871653
Assignee: UNIVERSAL DISPLAY CORPORATION
Field: Organic fine chemistry (Chemistry)
Classification: CPC H  C | IPC C  H

Claim 4:
5. The compound of claim 1, wherein at least one of R1, R2, and R3 comprises a chemical group selected from the group consisting of:, , wherein each Y1 to Y13 is independently selected from the group consisting of carbon and nitrogen;
wherein Y′ is selected from the group consisting of BRe, NRe, PRe, O, S, Se, C═O, S═O, SO2, CReRf, SiReRf, and GeReRf;
wherein Re and Rf can be fused or joined to form a ring;
wherein each Ra, Rb, Rc, and Rd can independently represent from mono substitution to the maximum possible number of substitutions, or no substitution;
wherein each Ra, Rb, Rc, Rd, Re, and Rf is independently a hydrogen or a substituent selected from the group consisting of deuterium, halide, alkyl, cycloalkyl, heteroalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, aryl, heteroaryl, nitrile, isonitrile, sulfanyl, and combinations thereof;
wherein any two adjacent substituents of Ra, Rb, Rc, and Rd can be fused or joined to form a ring or form a multidentate ligand; and
wherein the dashed lines represent the bonds to metal M.