US 12,312,365 B2
Organic electroluminescent materials and devices
Zhiqiang Ji, Chalfont, PA (US); Wei-Chun Shih, Lawrenceville, NJ (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 Sep. 16, 2021, as Appl. No. 17/476,631.
Claims priority of provisional application 63/090,653, filed on Oct. 12, 2020.
Prior Publication US 2022/0112228 A1, Apr. 14, 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); H10K 50/11 (2023.01); H10K 101/10 (2023.01); H10K 101/30 (2023.01); H10K 101/40 (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 85/626 (2023.02); H10K 85/633 (2023.02); H10K 85/654 (2023.02); H10K 85/6572 (2023.02); H10K 85/6574 (2023.02); H10K 85/6576 (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 ligand LA of Formula I

OG Complex Work Unit Chemistry
wherein:
ring C is a 5-membered or 6-membered carbocyclic or heterocyclic rings;
X1 and X2 are each independently N or CR;
K3 is a direct bond, O, or S;
RA, RB, and RC each independently represents zero, mono, or up to the maximum allowed number of substitutions to its associated ring;
each of R, RA, RB, 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, silyl, germyl, boryl, selenyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carboxylic acid, ether, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof; and
any two adjacent R, RA, RB, and RC can be joined or fused together to form a ring,
wherein the ligand LA is coordinated to a metal M through the two indicated dashed lines in Formula I;
wherein the metal M is Os, Ir, Pd, Pt, Cu, Ag, or Au;
wherein the ligand LA can be joined with other ligands to form a tridentate, tetradentate, pentadentate, or hexadentate ligand,
with the proviso that at least two RA substituents are joined together to form a 5-membered or 6-membered carbocyclic or heterocyclic ring.