Title:
ORGANIC IRIDIUM COMPLEX FOR ORGANIC ELECTROLUMINESCENT ELEMENT
Document Type and Number:
WIPO Patent Application WO/2020/158689
Kind Code:
A1
Abstract:
[Solution] The present invention relates to an organic iridium complex for an organic electroluminescent element, in which a C-N ligand and an auxiliary ligand are coordinated with iridium. In this organic iridium complex, a 2-(dibenzo[b,d]thiophene-4-yl)quinolinate ligand into which at least one methyl group is introduced is coordinated as the C-N ligand, and the organic iridium complex is represented by the formula. The organic iridium complex pertaining to the present invention is suitable as a red-light-emitting phosphorescent material for an OLED, and has high light emission quantum yield ΦPL and excellent color purity. (In the formula, R1, R2, R3, R4, R5, R6, and R7 are each either a methyl group or a hydrogen atom. However, at least any one of R1, R2, R3, and R4 is a methyl group. X-Y is the auxiliary ligand.)
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Inventors:
MASAHIRO YASUSHI (JP)
TANIUCHI JUNICHI (JP)
YAGI SHIGEYUKI (JP)
TANIUCHI JUNICHI (JP)
YAGI SHIGEYUKI (JP)
Application Number:
PCT/JP2020/002862
Publication Date:
August 06, 2020
Filing Date:
January 28, 2020
Export Citation:
Assignee:
TANAKA PRECIOUS METAL IND (JP)
UNIV OSAKA PUBLIC CORP (JP)
UNIV OSAKA PUBLIC CORP (JP)
International Classes:
C07F15/00; C09K11/06; H01L51/50
Foreign References:
| CN107973823A | 2018-05-01 | |||
| US20180273563A1 | 2018-09-27 | |||
| JP2014516965A | 2014-07-17 | |||
| CN104557998A | 2015-04-29 |
Other References:
STOKES, BENJAMIN J. ET AL.: "Rh2(II)-Catalyzed synthesis of carbazoles from biaryl azides", JOURNAL OF ORGANIC CHEMISTRY, vol. 74, no. 8, 18 March 2009 (2009-03-18), pages 3225 - 3228, XP055727331
Attorney, Agent or Firm:
TANAKA AND OKAZAKI (JP)
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