US 12,479,860 B2
Organic electroluminescent compound, a plurality of host materials, and organic electroluminescent device comprising the same
Ji-Song Jun, Gyeonggi-do (KR); Kyoung-Jin Park, Gyeonggi-do (KR); Chi-Sik Kim, Gyeonggi-do (KR); Sang-Hee Cho, Gyeonggi-do (KR); and Su-Hyun Lee, 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 Feb. 18, 2022, as Appl. No. 17/675,393.
Claims priority of application No. 10-2021-0023299 (KR), filed on Feb. 22, 2021; and application No. 10-2021-0176228 (KR), filed on Dec. 10, 2021.
Prior Publication US 2022/0281894 A1, Sep. 8, 2022
Int. Cl. C07D 517/00 (2006.01); C07D 519/00 (2006.01); H10K 85/60 (2023.01); H10K 101/00 (2023.01)
CPC C07D 517/00 (2013.01) [C07D 519/00 (2013.01); H10K 85/622 (2023.02); H10K 85/626 (2023.02); H10K 85/633 (2023.02); H10K 85/654 (2023.02); H10K 85/6572 (2023.02); H10K 85/6574 (2023.02); H10K 2101/90 (2023.02)] 8 Claims
 
1. A plurality of host materials comprising at least one first host compound and at least one second host compound, wherein the first host compound is represented by the following formula 1, and the second host compound is represented by the following formula 2:

OG Complex Work Unit Chemistry
in formula 1,
R1 to R8 each independently represent 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, a substituted or unsubstituted (C1-C30)alkoxy, a substituted or unsubstituted tri(C1-C30)alkylsilyl, a substituted or unsubstituted di(C1-C30)alkyl(C6-C30)arylsilyl, a substituted or unsubstituted (C1-C30)alkyldi(C6-C30)arylsilyl, a substituted or unsubstituted tri(C6-C30)arylsilyl, a substituted or unsubstituted fused ring group of a (C3-C30)aliphatic ring(s) and a (C6-C30)aromatic ring(s), or -(L)a-HAr;
at least one of R1 to R8 is -(L)a-HAr;
HAr represents a substituted or unsubstituted nitrogen-containing (3- to 20-membered)heteroaryl;
L each independently represents a single bond, a substituted or unsubstituted (C6-C30)arylene, or a substituted or unsubstituted (3- to 30-membered)heteroarylene; and
a represents 1 or 2;

OG Complex Work Unit Chemistry
in formula 2,
L1 to L3 each independently represent 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;
Ar1 to Ar3 each independently represent 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, a substituted or unsubstituted (C1-C30)alkoxy, a substituted or unsubstituted tri(C1-C30)alkylsilyl, a substituted or unsubstituted di(C1-C30)alkyl(C6-C30)arylsilyl, a substituted or unsubstituted (C1-C30)alkyldi(C6-C30)arylsilyl, a substituted or unsubstituted tri(C6-C30)arylsilyl, a substituted or an unsubstituted fused ring group of a (C3-C30)aliphatic ring(s) and a (C6-C30)aromatic ring(s), or -Lb-N(Arc)(Ard);
Lb represents a single bond, a substituted or unsubstituted (C6-C30)arylene, or a substituted or unsubstituted (3- to 30-membered)heteroarylene; and
Arc and Ard each independently represent hydrogen, a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C2-C30)alkenyl, a substituted or unsubstituted fused ring group of a (C3-C30)aliphatic ring(s) and a (C6-C30)aromatic ring(s), a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted (3- to 30-membered)heteroaryl;
with the proviso that the case where all of L1 to L3 are single bonds and all of Ar1 to Ar3 are hydrogen is excluded.