Iridium complex, OLED using the same, and nitrogen-containing tridentate ligand having carbene unit

US10153442B2 · kind B2 · utility

Assignee

• NATIONAL TSING HUA UNIVERSITY · TW

Inventors

• Yun Chi · Santa Clara, US
• Jun Lin · Taoyuan, TW

Key dates

• Filing date: Apr 14, 2016
• Grant date: Dec 11, 2018
• Expiry date: Apr 5, 2037

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K2101/10
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

An iridium complex and an OLED using the same are shown. The iridium complex is represented by formula (I), wherein R1 is substituted or unsubstituted C1-12 alkyl, or substituted or unsubstituted C6-12 aryl; R2 is hydrogen, fluorine or —CmF2m+1 (m=1, 2 or 3), substituted or unsubstituted C1-12 alkyl, or substituted or unsubstituted C6-12 aryl; R3 is hydrogen, fluorine or —CmF2m+1 (m=1, 2 or 3), substituted or unsubstituted C1-6 alkyl or alkoxy, and n is 1, 2, 3 or 4; each of R4 is hydrogen or substituted or unsubstituted C1-12 alkyl, or R4's may join to form a C3-8 aromatic ring, and R4's may be the same or different; X1, X2, X3 and X4 are each independently CH or nitrogen; Y1, Y2 and Y3 are each independently carbon or nitrogen, with a proviso that at least one of Y1, Y2 and Y3 is nitrogen, and the tridentate chelate Y1^Y2^Y3 is dianionic.