US 12,234,219 B2
Organic electroluminescent compound, a plurality of host materials, and organic electroluminescent device comprising the same
Eun-Joung Choi, Gyeonggi-do (KR); Hyun-Ju Kang, Gyeonggi-do (KR); Hong-Yeop Na, Gyeonggi-do (KR); Su-Hyun Lee, Gyeonggi-do (KR); and Sang-Hee Cho, Gyeonggi-do (KR)
Assigned to Rohm and Haas Electronic Materials Korea Ltd., (KR)
Filed by ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD., Chungcheongnam-do (KR)
Filed on Aug. 2, 2021, as Appl. No. 17/391,160.
Claims priority of application No. 10-2020-0102481 (KR), filed on Aug. 14, 2020.
Prior Publication US 2022/0048886 A1, Feb. 17, 2022
Int. Cl. C07D 401/10 (2006.01); H10K 50/11 (2023.01); H10K 85/60 (2023.01); H10K 101/00 (2023.01); H10K 101/40 (2023.01)
CPC C07D 401/10 (2013.01) [H10K 85/622 (2023.02); H10K 85/623 (2023.02); H10K 85/624 (2023.02); H10K 85/626 (2023.02); H10K 85/633 (2023.02); H10K 85/636 (2023.02); H10K 85/6572 (2023.02); H10K 85/6574 (2023.02); H10K 85/6576 (2023.02); H10K 50/11 (2023.02); H10K 2101/40 (2023.02); H10K 2101/90 (2023.02)] 9 Claims
 
1. An organic electroluminescent compound represented by the following formula 1:

OG Complex Work Unit Chemistry
wherein the formula 1 is represented by at least one of the following formulas 2-1 to 2-4:

OG Complex Work Unit Chemistry

OG Complex Work Unit Chemistry
in formulas 2-1 to 2-4,
X1 to X4, each independently, represent N or CRc, and at least two of X1 to X4 represent N;
Y1 to Y4, each independently, represent N or CRd, and at least one of Y1 to Y4 represents N;
Rc and Rd, each independently, are represented by -L-Ar;
L represents a single bond, a substituted or unsubstituted (C1-C30)alkylene, a substituted or unsubstituted (C6-C30)arylene, a substituted or unsubstituted (3- to 30-membered)heteroarylene, or a substituted or unsubstituted (C3-C30)cycloalkylene;
Ar represents hydrogen, deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C6-C30)aryl, a substituted or unsubstituted (3- to 30-membered)heteroaryl, a substituted or unsubstituted (C3-C30)cycloalkyl, or a substituted or unsubstituted (C1-C30)alkoxy; or is represented by the following formula 3 or 4:

OG Complex Work Unit Chemistry
in formulas 3 and 4,
Ra1, Ra2, Rb1, Rb2, and Rb3, each independently, represent a substituted or unsubstituted (C6-C30)aryl, a substituted or unsubstituted (3- to 30-membered)heteroaryl, or a substituted or unsubstituted (C3-C30)cycloalkyl, and
* represents a site linked to L; or
at least two adjacent Ar's may be linked to each other to form a ring(s);
Ra represents a methyl, an ethyl, an n-propyl, an isopropyl, an n-butyl, an isobutyl, or a tert-butyl;
Rb represents a methyl, an ethyl, an n-propyl, an isopropyl, an n-butyl, an isobutyl, a tert-butyl, or a phenyl;
ring A represents a benzene or a naphthalene; and
ring B is absent, or represents a benzene.