	US 12,289,996 B2
	Plurality of host materials and organic electroluminescent device comprising the same
So-Young Jung, Gyeonggi-do (KR); Su-Hyun Lee, Gyeonggi-do (KR); Mi-Ja Lee, Gyeonggi-do (KR); Doo-Hyeon Moon, Gyeonggi-do (KR); and Sang-Hee Cho, Gyeonggi-do (KR)
Assigned to DuPont Specialty Materials Korea Ltd., (KR)
Filed by ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD., Chungcheongnam-do (KR)
Filed on May 22, 2023, as Appl. No. 18/321,074.
Application 18/321,074 is a continuation of application No. 17/075,581, filed on Oct. 20, 2020, granted, now 11,706,984.
Claims priority of application No. 10-2019-0132762 (KR), filed on Oct. 24, 2019.
Prior Publication US 2023/0329107 A1, Oct. 12, 2023
Int. Cl. H10K 85/60 (2023.01); H10K 50/11 (2023.01); H10K 85/30 (2023.01); H10K 101/00 (2023.01); H10K 101/10 (2023.01)

CPC H10K 85/6572 (2023.02) [H10K 85/615 (2023.02); H10K 85/626 (2023.02); H10K 85/654 (2023.02); H10K 85/6574 (2023.02); H10K 85/6576 (2023.02); H10K 50/11 (2023.02); H10K 85/342 (2023.02); H10K 2101/10 (2023.02); H10K 2101/90 (2023.02)]

3 Claims

1. An organic electroluminescent compound represented by the following formula 3:

wherein,

Ar₂₁and Ar₂₂, each independently, represent a phenyl unsubstituted or substituted with deuterium(s), a biphenyl unsubstituted or substituted with deuterium(s), a terphenyl unsubstituted or substituted with deuterium(s), or a naphthyl unsubstituted or substituted with deuterium(s);

L₂₁represents a naphthylene unsubstituted or substituted with deuterium(s)

R₁, R₄, R₅, and R₈, each independently, represent hydrogen, deuterium, a phenyl unsubstituted or substituted with deuterium(s), a biphenyl unsubstituted or substituted with deuterium(s), a terphenyl unsubstituted or substituted with deuterium(s), or a naphthyl unsubstituted or substituted with deuterium(s); and

R₂, R₃, R₆, and R₇, each independently, represent hydrogen or deuterium;

with the proviso that if both Ar₂₁and Ar₂₂represent phenyl, at least one of R₁, R₄, R₅, and R₈is not hydrogen or deuterium.