US 12,279,525 B2
Organic electroluminescent compound, a plurality of host materials and organic electroluminescent device comprising the same
Hyo-Soon Park, Gyeonggi-do (KR); Kyoung-Jin Park, Gyeonggi-do (KR); Sang-Hee Cho, Gyeonggi-do (KR); So-Mi Park, Gyeonggi-do (KR); and Dong-Hyung 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 Aug. 2, 2021, as Appl. No. 17/391,166.
Claims priority of application No. 10-2020-0100503 (KR), filed on Aug. 11, 2020; and application No. 10-2021-0077495 (KR), filed on Jun. 15, 2021.
Prior Publication US 2022/0069228 A1, Mar. 3, 2022
Int. Cl. H01L 51/50 (2006.01); C07D 307/91 (2006.01); C07D 403/10 (2006.01); H10K 85/60 (2023.01); H10K 50/11 (2023.01); H10K 101/00 (2023.01)
CPC H10K 85/654 (2023.02) [C07D 307/91 (2013.01); C07D 403/10 (2013.01); H10K 85/633 (2023.02); H10K 85/636 (2023.02); H10K 85/6572 (2023.02); H10K 50/11 (2023.02); H10K 85/623 (2023.02); H10K 85/6574 (2023.02); H10K 85/6576 (2023.02); H10K 2101/90 (2023.02)] 14 Claims
 
5. A plurality of host materials comprising a first host material comprising the organic electroluminescent compound represented by the following formula 1 and a second host material different from the first host material:

OG Complex Work Unit Chemistry
wherein
R11 to R14 each independently represent hydrogen, deuterium, a substituted or unsubstituted (C1-C30)alkyl, a substituted or unsubstituted (C6-C30)aryl, or a substituted or unsubstituted (3- to 30-membered)heteroaryl, or may be linked to an adjacent substituent to form a ring, with a proviso that at least one of R11 to R14 is neither hydrogen nor deuterium;
R1 to R8 each independently represent hydrogen, deuterium, or -L-Ar, or may be linked to an adjacent substituent to form a ring, with a proviso that at least one pair of R1 and R2, R2 and R3, R3 and R4, R5 and R6, R6 and R7, and R7 and R8 is linked to each other to be fused as the following formula a;

OG Complex Work Unit Chemistry
wherein
X represents NR31, O, S, CR32R33, or —CR34═CR35—;
R31 represents -L1-Ar1;
R32 and R33 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, or may be linked to an adjacent substituent to form a ring;
R34 and R35 each independently represent hydrogen, deuterium, or -L5-Ar5;
R21 to R24 each independently represent hydrogen, deuterium, or -L2-Ar2, or may be linked to an adjacent substituent to form a ring:
L, L1, L2, and L5 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) heteroary lene, or a substituted or unsubstituted (C3-C30)cycloalkylene;
Ar, Ar1, Ar2, and Ar5 each independently represent 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 are represented by the following formula b or c;

OG Complex Work Unit Chemistry
wherein
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;
custom character in formula a represents a bonding site with R1 to R8; and
custom character in formulas b and c represents a bonding site with L, L1, L2, or L5, respectively.