US 12,484,437 B2
Organic electroluminescent materials and devices
Maria L. Buil, Saragossa (ES); Maria Benitez, Saragossa (ES); Miguel A. Esteruelas, Saragossa (ES); Enrique Oñate, Saragossa (ES); Jui-Yi Tsai, Newtown, PA (US); Alexey Borisovich Dyatkin, Ambler, PA (US); Morgan C. Macinnis, Yardley, PA (US); and Wei-Chun Shih, Lawrenceville, NJ (US)
Assigned to UNIVERSAL DISPLAY CORPORATION, Ewing, NJ (US)
Filed by Universal Display Corporation, Ewing, NJ (US)
Filed on Feb. 16, 2022, as Appl. No. 17/672,828.
Claims priority of provisional application 63/154,143, filed on Feb. 26, 2021.
Prior Publication US 2022/0302394 A1, Sep. 22, 2022
Int. Cl. C09K 11/06 (2006.01); C07F 15/00 (2006.01); C09K 11/02 (2006.01); H10K 85/30 (2023.01); H10K 50/11 (2023.01); H10K 101/10 (2023.01)
CPC H10K 85/342 (2023.02) [C07F 15/0033 (2013.01); C09K 11/02 (2013.01); C09K 11/06 (2013.01); C09K 2211/1007 (2013.01); C09K 2211/1029 (2013.01); C09K 2211/185 (2013.01); H10K 50/11 (2023.02); H10K 2101/10 (2023.02)] 20 Claims
 
1. A compound comprising a first ligand LA of
Formula I,

OG Complex Work Unit Chemistry
wherein:
moiety A is a monocyclic or polycyclic ring structure comprising 5-membered and/or 6-membered carbocyclic or heterocyclic rings;
RA represents mono to the maximum allowable substitution, or no substitution;
R1 and each RA 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, germyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carboxylic acid, ether, ester, nitrile, isonitrile, sulfanyl, selenyl, sulfinyl, sulfonyl, phosphino, and combinations thereof;
LA is coordinated to a metal M;
metal M is selected from the group consisting of Os, Ir Pd, Pt, Cu, Ag, and Au;
if metal M coordinates to another ligand, said ligand is a bidentate ligand;
LA may be joined with other ligands to comprise a tetradentate, or hexadentate ligand; and
any two RA can be joined or fused together to form a ring.