US 12,245,498 B2
Organoiridium complex for organic electroluminescent elements
Yasushi Masahiro, Tokyo (JP); Junichi Taniuchi, Tsukuba (JP); and Shigeyuki Yagi, Sakai (JP)
Assigned to TANAKA KIKINZOKU KOGYO K.K., Tokyo (JP); and UNIVERSITY PUBLIC CORPORATION OSAKA, Osaka (JP)
Appl. No. 17/426,082
Filed by TANAKA KIKINZOKU KOGYO K.K., Tokyo (JP); and UNIVERSITY PUBLIC CORPORATION OSAKA, Osaka (JP)
PCT Filed Jan. 28, 2020, PCT No. PCT/JP2020/002862
§ 371(c)(1), (2) Date Jul. 27, 2021,
PCT Pub. No. WO2020/158689, PCT Pub. Date Aug. 6, 2020.
Claims priority of application No. 2019-014064 (JP), filed on Jan. 30, 2019.
Prior Publication US 2022/0093879 A1, Mar. 24, 2022
Int. Cl. H10K 85/30 (2023.01); C07F 15/00 (2006.01); C09K 11/06 (2006.01); H10K 50/11 (2023.01); H10K 101/10 (2023.01)
CPC H10K 85/342 (2023.02) [C07F 15/0033 (2013.01); C09K 11/06 (2013.01); C09K 2211/1037 (2013.01); C09K 2211/185 (2013.01); H10K 50/11 (2023.02); H10K 2101/10 (2023.02)] 19 Claims
OG exemplary drawing
 
1. An organoiridium complex for an organic electroluminescent element, comprising a C—N ligand and an ancillary ligand coordinated with iridium, and represented by a following Formula,
wherein a 2-(dibenzo[b,d]thiophen-4-yl)quinolinate ligand having at least one methyl group introduced thereinto is coordinated as the C—N ligand:

OG Complex Work Unit Chemistry
and in “Chemical Formula 1”, R1, R2, R3, R4, R5, R6, and R7 are each a methyl group or a hydrogen atom, provided that at least one of R1, R2, R3, R4 is a methyl group; and X—Y is the ancillary ligand.