US 12,466,848 B2
Organic electroluminescent materials and devices
Jui-Yi Tsai, Newtown, PA (US); Alexey Borisovich Dyatkin, Ambler, PA (US); Walter Yeager, Yardley, PA (US); and Pierre-Luc T. Boudreault, Pennington, NJ (US)
Assigned to UNIVERSAL DISPLAY CORPORATION, Ewing, NJ (US)
Filed by UNIVERSAL DISPLAY CORPORATION, Ewing, NJ (US)
Filed on Nov. 15, 2021, as Appl. No. 17/526,104.
Claims priority of provisional application 63/123,750, filed on Dec. 10, 2020.
Prior Publication US 2022/0194975 A1, Jun. 23, 2022
Int. Cl. C07F 15/00 (2006.01); H10K 50/11 (2023.01); H10K 85/30 (2023.01); H10K 85/60 (2023.01); H10K 101/10 (2023.01); H10K 101/30 (2023.01); H10K 101/40 (2023.01)
CPC C07F 15/0086 (2013.01) [H10K 85/346 (2023.02); H10K 85/622 (2023.02); H10K 85/624 (2023.02); H10K 85/626 (2023.02); H10K 85/654 (2023.02); H10K 85/6572 (2023.02); H10K 85/6576 (2023.02); H10K 85/658 (2023.02); H10K 50/11 (2023.02); H10K 2101/10 (2023.02); H10K 2101/30 (2023.02); H10K 2101/40 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A compound comprising a first ligand LA of

OG Complex Work Unit Chemistry
wherein:
rings A, B, C, D, E, and F are each independently a 5-membered or 6-membered carbocyclic or heterocyclic ring;
Z1-Z12 are each independently C or N;
X1-X4 are each independently C or N;
Y1 is selected from the group consisting of a direct bond, O, S, NR, and CRR′;
Y2 is selected from the group consisting of a direct bond, O, S, NR, and CRR′;
at least one of Y1 and Y2 is not a direct bond;
each RA, RB, RC, RD, RE, RF, and RG independently represents mono to the maximum allowable number of substitutions, or no substitution;
each R, R′, RA, RB, RC, RD, RE, RF, and RG is independently a hydrogen or a substituent selected from the group consisting of deuterium, halogen, alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, germyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carboxylic acid, ether, ester, nitrile, isonitrile, sulfanyl, selenyl, sulfinyl, sulfonyl, phosphino, boryl, and combinations thereof;
LA is complexed to a metal M;
M can be Pd or Pt;
M can be coordinated to other ligands;
the ligand LA can be linked with other ligands to form a pentadentate or hexadentate ligand; and
any two of R, R′, RA, RB, RC, RD, RE, RF, and RG can be joined or fused together to form a ring.