US 11,950,506 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); Sang-Hee Cho, Gyeonggi-do (KR); and Doo-Hyeon Moon, 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 Oct. 20, 2020, as Appl. No. 17/075,602.
Claims priority of application No. 10-2019-0140757 (KR), filed on Nov. 6, 2019.
Prior Publication US 2021/0135127 A1, May 6, 2021
Int. Cl. H01L 51/50 (2006.01); H10K 85/60 (2023.01); H10K 101/00 (2023.01)
CPC H10K 85/6572 (2023.02) [H10K 85/631 (2023.02); H10K 85/6574 (2023.02); H10K 85/6576 (2023.02); H10K 2101/90 (2023.02)] 7 Claims
 
1. A plurality of host materials comprising a first host material comprising a compound represented by the following formula 1, and a second host material comprising a compound represented by the following formula 2:

OG Complex Work Unit Chemistry
wherein
L1 represents a single bond, a substituted or unsubstituted (C1-C30)alkylene, a substituted or unsubstituted (C3-C30)cycloalkylene, a substituted or unsubstituted (C6-C30)arylene, or a substituted or unsubstituted (3- to 30-membered)heteroarylene;
Ar represents deuterium, a halogen, a cyano, a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C3-C30)cycloalkyl, a substituted or unsubstituted (C3-C30)cycloalkenyl, a substituted or unsubstituted (3- to 7-membered)heterocycloalkyl, a substituted or unsubstituted (C6-C30)aryl, a substituted or unsubstituted (3- to 30-membered)heteroaryl, —NR11R12, or —SiR13R14R15;
R11 to R15 each independently represent a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted (3- to 30-membered)heteroaryl;

OG Complex Work Unit Chemistry
 is represented by the following formula 1-2-1:

OG Complex Work Unit Chemistry
wherein
R31 to R34 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 mono- or di-(C1-C30)alkylamino, a substituted or unsubstituted mono- or di-(C6-C30)arylamino, or a substituted or unsubstituted (C1-C30)alkyl(C6-C30)arylamino; or may be linked to an adjacent substituent to form a ring(s);
aa represents an integer of 1 to 3, ab and ac each independently represent an integer of 1 to 4, ad represents 1 or 2, where if aa, ab, ac, and ad are an integer of 2 or more, each of R31, each of R32, each of R33, and each of R34 may be the same or different; and
* represents a bonding site to L1;

OG Complex Work Unit Chemistry
wherein
HAr represents a substituted or unsubstituted nitrogen-containing (3- to 30-membered)heteroaryl;
L2 represents a single bond, or a (C6-C20)arylene unsubstituted or substituted with deuterium; and
R1 to R8 each independently represent hydrogen, deuterium, or a (C6-C30)aryl unsubstituted or substituted with deuterium.