US 12,129,269 B2
Organic electroluminescent materials and devices
Wei-Chun Shih, Lawrenceville, NJ (US); Pierre-Luc T. Boudreault, Pennington, NJ (US); and Zhiqiang Ji, Chalfont, PA (US)
Assigned to UNIVERSAL DISPLAY CORPORATION, Ewing, NJ (US)
Filed by UNIVERSAL DISPLAY CORPORATION, Ewing, NJ (US)
Filed on Mar. 29, 2021, as Appl. No. 17/215,348.
Claims priority of provisional application 63/009,153, filed on Apr. 13, 2020.
Prior Publication US 2022/0372054 A1, Nov. 24, 2022
Int. Cl. C07F 15/00 (2006.01); H01L 51/00 (2006.01); H10K 85/30 (2023.01); H10K 85/40 (2023.01); H10K 85/60 (2023.01)
CPC C07F 15/0033 (2013.01) [H10K 85/342 (2023.02); H10K 85/40 (2023.02); H10K 85/622 (2023.02); H10K 85/624 (2023.02); H10K 85/654 (2023.02); H10K 85/6572 (2023.02); H10K 85/6574 (2023.02); H10K 85/6576 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A compound having a formula of M(LA)x(LB)y(LC)z wherein LB and LC are each a bidentate ligand; and wherein x is 1 or 2; y is 1, or 2; z is 0, 1, or 2; and x+y+z is the oxidation state of the metal M,
wherein LA has the structure of Formula I:

OG Complex Work Unit Chemistry
wherein
QA and QB is each independently selected from the group consisting of C, Si, and Ge with the proviso that QA and QB are not both C;
each RA, RB, RC, RF, RG, RH, and RK is independently a hydrogen or a substituent selected from the group consisting of deuterium, halogen, alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, boryl, 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;
the ligand LA complexes to a metal M through the dashed lines to form a 6-membered chelate ring;
M is selected from the group consisting of Os, Ir, Pd, Pt, Ag, and Au;
M can be coordinated to other ligands;
LA can be joined with other ligands to comprise a tridentate, tetradentate, pentadentate, or hexadentate ligand; and
any two adjacent RA, RB, RC, RF, RG, RH, and RK can be joined or fused to form a ring.