The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 04, 2025
Filed:
Jan. 28, 2020
Tanaka Kikinzoku Kogyo K.k., Tokyo, JP;
University Public Corporation Osaka, Osaka, JP;
TANAKA KIKINZOKU KOGYO K.K., Tokyo, JP;
UNIVERSITY PUBLIC CORPORATION OSAKA, Osaka, JP;
Abstract
The present invention relates to an organoiridium complex for an organic electroluminescent element in which a C—N ligand and an ancillary ligand are coordinated with iridium. This organoiridium complex contains a 2-(dibenzo[b,d]thiophen-4-yl)quinolinate ligand having at least one methyl group introduced thereinto coordinated as the C—N ligand, and is represented by the following Formula. The present inventive organoiridium complex is suitable as a red emitting phosphorescent material for an OLED, has high photoluminescence quantum yield Φ, and is excellent in color purity. (In the aforementioned Formula, R, R, R, R, R, R, and Rare each a methyl group or a hydrogen atom, provided that at least one of R, R, R, Ris a methyl group; and X—Y is the ancillary ligand.)