US 12,459,946 B2
Organic host materials for electroluminescent devices
Bin Ma, Ewing, NJ (US); Vadim Adamovich, Yardley, PA (US); and Alan Deangelis, Pennington, NJ (US)
Assigned to UNIVERSAL DISPLAY CORPORATION, Ewing, NJ (US)
Filed by UNIVERSAL DISPLAY CORPORATION, Ewing, NJ (US)
Filed on Sep. 11, 2018, as Appl. No. 16/127,444.
Claims priority of provisional application 62/568,570, filed on Oct. 5, 2017.
Prior Publication US 2019/0109286 A1, Apr. 11, 2019
Int. Cl. C07D 487/04 (2006.01); C09K 11/06 (2006.01); H10K 50/11 (2023.01); H10K 50/15 (2023.01); H10K 50/16 (2023.01); H10K 50/18 (2023.01); H10K 85/30 (2023.01); H10K 85/60 (2023.01); H10K 101/10 (2023.01)
CPC C07D 487/04 (2013.01) [C09K 11/06 (2013.01); H10K 85/6572 (2023.02); C09K 2211/1018 (2013.01); H10K 50/11 (2023.02); H10K 50/15 (2023.02); H10K 50/16 (2023.02); H10K 50/18 (2023.02); H10K 85/342 (2023.02); H10K 2101/10 (2023.02)] 16 Claims
OG exemplary drawing
 
1. A compound of Formula I:

OG Complex Work Unit Chemistry
wherein RA, RB, RC, and RD each independently represent mono to a maximum possible number of substitutions, or no substitution;
wherein two of X1 to X4 are carbon, and the other two are nitrogen;
wherein L is a linker selected from the group consisting of unsubstituted phenyl and phenyl substituted by phenyl;
L bonds to one of X1 to X4 that is carbon;
the N bonded to L and the one of X1 to X4 that is carbon and bonded to L are para to each other;
wherein R, RA, RB, RC, and RD are each independently a hydrogen or a substituent selected from the group consisting of deuterium, unsubstituted aryl, substituted aryl, heteroaryl, substituted heteroaryl and combinations thereof;
wherein RD does not comprise a dibenzothiophene group; and
wherein any adjacent substituents are optionally joined or fused into a ring.