US 12,006,333 B2
Organic electroluminescent materials and devices comprising imidazole-containing metal complexes
Scott Beers, Flemington, NJ (US); Woo-Young So, Richboro, PA (US); and Hsiao-Fan Chen, Lawrence Township, NJ (US)
Assigned to Universal Display Corporation
Filed by Universal Display Corporation, Ewing, NJ (US)
Filed on Mar. 3, 2023, as Appl. No. 18/178,189.
Application 18/178,189 is a continuation of application No. 16/854,193, filed on Apr. 21, 2020, granted, now 11,613,550.
Claims priority of provisional application 62/840,625, filed on Apr. 30, 2019.
Prior Publication US 2023/0203076 A1, Jun. 29, 2023
Int. Cl. C07F 15/00 (2006.01); H10K 59/12 (2023.01); H10K 85/30 (2023.01); H10K 85/40 (2023.01); H10K 85/60 (2023.01); H10K 50/11 (2023.01); H10K 101/10 (2023.01); H10K 101/40 (2023.01)
CPC C07F 15/006 (2013.01) [C07F 15/0033 (2013.01); C07F 15/0086 (2013.01); H10K 59/12 (2023.02); H10K 85/342 (2023.02); H10K 85/346 (2023.02); H10K 85/40 (2023.02); H10K 85/622 (2023.02); H10K 85/654 (2023.02); H10K 85/6572 (2023.02); H10K 85/6576 (2023.02); H10K 50/11 (2023.02); H10K 2101/10 (2023.02); H10K 2101/40 (2023.02)] 18 Claims
OG exemplary drawing
 
1. A compound comprising a first ligand LA of Formula I:

OG Complex Work Unit Chemistry
wherein A1 and A2 are each independently C or Si;
wherein each RA independently represents mono to the maximum allowable substitution, or no substitution;
wherein each R, R1, R2, R3, R4 and RA is independently a hydrogen or a substituent selected from the group consisting of deuterium, halogen, alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, boryl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carboxylic acid, ether, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof;
wherein LA is complexed to a metal M;
wherein M is optionally coordinated to one or more other ligands;
wherein the ligand LA is optionally linked with the one or more other ligands to form a tridentate, tetradentate, pentadentate, or hexadentate ligand; and
wherein any two adjacent substituents are optionally joined or fused together to form a ring.