US 12,268,045 B2
Hole transport material, manufacturing method thereof, and electroluminescent device
Yanjie Wang, Wuhan (CN); Jiajia Luo, Wuhan (CN); and Keyan Bai, Wuhan (CN)
Appl. No. 17/274,190
Filed by WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD., Wuhan (CN)
PCT Filed Dec. 22, 2020, PCT No. PCT/CN2020/138351
§ 371(c)(1), (2) Date Mar. 8, 2021,
PCT Pub. No. WO2022/120945, PCT Pub. Date Jun. 16, 2022.
Claims priority of application No. 202011442468.8 (CN), filed on Dec. 8, 2020.
Prior Publication US 2023/0039370 A1, Feb. 9, 2023
Int. Cl. H01L 51/50 (2006.01); H01L 51/00 (2006.01); H10K 50/15 (2023.01); H10K 85/60 (2023.01)
CPC H10K 50/15 (2023.02) [H10K 85/615 (2023.02); H10K 85/624 (2023.02); H10K 85/633 (2023.02); H10K 85/657 (2023.02); H10K 85/6574 (2023.02)] 14 Claims
OG exemplary drawing
 
1. A hole transport material comprising a molecule, wherein a main chain of the molecule comprises a spiro anthracene fluorene structure, and the molecule is represented by a following structural formula:

OG Complex Work Unit Chemistry
wherein each of Ar1, Ar2, Ar3, and Ar4 is represented by one of following structural formulae:

OG Complex Work Unit Chemistry
R is selected from a C1-C60 alkyl group, a C6-C60 aryl group, or a C5-C60 heteroaryl group;
R1-R6 are independently selected from hydrogen, deuterium, a C6-C60 aryl group, or a C5-C60 heteroaryl group;
R7 to R10 and L are independently selected from a C6-C60 aryl group or a C5-C60 heteroaryl group; and
a, c, and d are independently selected from an integer from 0 to 3, and b is an integer from 0 to 2.