Patent number: 11834459
Abstract: A compound of Formula I wherein X1 and X2 are independently CRX or N, and at least one of X1 or X2 is CRX; Y is selected from the group consisting of O, S, Se, NR?, BR?, CR?R?, and SiR?R?; R?, and R? are each independently selected from the group consisting of alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, aryl, heteroaryl, and combinations thereof; R is selected from the group consisting of deuterium, halogen, alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carboxylic acid, ether, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof; RA, and RC each independently represent mono to the maximum allowable substitution, or no substitution; and each RX, RA, and RC is independently a hydrogen or a substituent selected from the group consisting of deuterium, halogen, alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, arylalkyl, alkoxy, aryloxy, amino, si
Type:
Grant
Filed:
November 13, 2019
Date of Patent:
December 5, 2023
Assignee:
Universal Display Corporation
Inventors:
Tyler Fleetham, Peter Wolohan, Hsiao-Fan Chen