US 12,102,002 B2
Compound having benzazole ring structure, and organic electroluminescent device
Kouki Kase, Tokyo (JP); Si-In Kim, Tokyo (JP); Ji-Yung Kim, Tokyo (JP); Yuta Hirayama, Tokyo (JP); Kazuyuki Suruga, Tokyo (JP); and Shuichi Hayashi, Tokyo (JP)
Assigned to HODOGAYA CHEMICAL CO., LTD., Tokyo (JP)
Appl. No. 17/414,601
Filed by HODOGAYA CHEMICAL CO., LTD., Tokyo (JP)
PCT Filed Feb. 12, 2020, PCT No. PCT/JP2020/005410
§ 371(c)(1), (2) Date Jun. 16, 2021,
PCT Pub. No. WO2020/166630, PCT Pub. Date Aug. 20, 2020.
Claims priority of application No. 2019-023121 (JP), filed on Feb. 13, 2019.
Prior Publication US 2022/0052273 A1, Feb. 17, 2022
Int. Cl. H10K 85/60 (2023.01)
CPC H10K 85/6572 (2023.02) [H10K 85/622 (2023.02); H10K 85/624 (2023.02); H10K 85/626 (2023.02); H10K 85/654 (2023.02); H10K 85/6574 (2023.02); H10K 85/6576 (2023.02)] 9 Claims
OG exemplary drawing
 
1. A compound having a benzazole ring structure and represented by the general formula (a-4):

OG Complex Work Unit Chemistry
where a plurality of R are the same or different, and represent a group represented by the structural formula (b-1) below, a hydrogen atom, a substituted or unsubstituted aromatic hydrocarbon group, or a substituted or unsubstituted fused polycyclic aromatic group,
at least one R is a group represented by the structural formula (b-1), and at least one other R is a phenyl group, a naphthyl group, a phenanthrenyl group, a spirobifluorenyl group, a pyridyl group, or a substituted or unsubstituted fluorenyl group, or a group obtained by combining any of these groups with a phenylene group:

OG Complex Work Unit Chemistry
where L1 and L2 are the same or different, and represent a single bond, a substituted or unsubstituted aromatic hydrocarbon group, a substituted or unsubstituted aromatic heterocyclic group, or a substituted or unsubstituted fused polycyclic aromatic group,
n is an integer 1 or 2, and
the dashed line indicates a binding site.