US 12,460,128 B2
Organic electroluminescent materials and devices
Scott Beers, Flemington, NJ (US); Hsiao-Fan Chen, Lawrence Township, NJ (US); Jason Brooks, Philadelphia, PA (US); Alexey Borisovich Dyatkin, Ambler, PA (US); Suman Layek, Pennington, NJ (US); Jui-Yi Tsai, Newtown, PA (US); and Rasha Hamze, Philadelphia, PA (US)
Assigned to UNIVERSAL DISPLAY CORPORATION, Ewing, NJ (US)
Filed by UNIVERSAL DISPLAY CORPORATION, Ewing, NJ (US)
Filed on Sep. 23, 2021, as Appl. No. 17/482,695.
Claims priority of provisional application 63/179,695, filed on Apr. 26, 2021.
Claims priority of provisional application 63/086,993, filed on Oct. 2, 2020.
Prior Publication US 2022/0115607 A1, Apr. 14, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H01L 51/00 (2006.01); C07F 15/00 (2006.01); C09K 11/06 (2006.01); H10K 85/30 (2023.01); H10K 85/60 (2023.01); H10K 50/11 (2023.01); H10K 101/10 (2023.01)
CPC C09K 11/06 (2013.01) [C07F 15/0086 (2013.01); H10K 85/346 (2023.02); H10K 85/658 (2023.02); C09K 2211/1044 (2013.01); C09K 2211/185 (2013.01); H10K 50/11 (2023.02); H10K 2101/10 (2023.02)] 19 Claims
OG exemplary drawing
 
1. A compound comprising a ligand LA of a structure of

OG Complex Work Unit Chemistry
wherein:
moieties A and B can be each independently a monocyclic or polycyclic fused ring structure comprising 5-membered and/or 6-membered carbocyclic or heterocyclic rings;
ring Z is a 7-, 8-, 9-, or 10-membered ring;
X1, X2, X5, X10, X11, and X12 are each independently C or N, with at least one of X1 or X11 being C;
custom character is either a single bond or a double bond;
K3 and K4 are each independently selected from the group consisting of a direct bond, O, and S;
RA, RB, and RZ each independently represent zero, mono, or up to a maximum allowed number of substitutions to its associated ring;
each of RA, RB, and RZ 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 RA, RB, or RZ can be joined or fused to form a ring,
wherein the ligand LA is coordinated to a metal M through the two indicated dashed lines;
wherein M is Pt or Pd, and can be coordinated to other ligands; and
wherein the ligand LA is joined with another ligand to form a tetradentate ligand.