Patent ID: 11889708
Assignee: UNIVERSAL DISPLAY CORPORATION
Field: Organic fine chemistry (Chemistry)
Classification: CPC H  C | IPC C  H

Claim 12:
13. The OLED of claim 12, wherein the compound of Formula II is a tetradentate Pt complex that has at least one part of the ligand selected from the group consisting of:, wherein:
each Y1 to Y13 are independently selected from the group consisting of carbon and nitrogen;
Y′ is selected from the group consisting of B Re, N Re, P Re, O, S, Se, C═O, S═O, SO2, CReRf, SiReRf, and GeReRf;
Re and Rf are optionally fused or joined to form a ring;
Each Ra, Rb, Rc, and Rd may independently represent from mono substitution to the maximum possible number of substitution, or no substitution;
each Ra, Rb, Re, Rd, Re and Rf is 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 acid, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof; and
any two adjacent substituents of Ra, Rb, Re, and Rd are optionally fused or joined to form a ring.