Organic electroluminescent materials and devices

US11108000B2 · kind B2 · utility

Assignee

• UNNIVERSAL DISPLAY CORPORATION · US

Inventors

• Bin Ma · Plainsboro, US
• Walter Yeager · Yardley, US
• Edward Barron · Hillsborough Township, US
• Alan DeAngelis · Pennington, US
• Chuanjun Xia · Lawrenceville, US
• Vadim Adamovich · Yardley, US
• Scott Beers · Ewing, US
• Harvey Wendt · Newark, US
• Suman Layek · Lawrenceville, US

Key dates

• Filing date: May 3, 2018
• Grant date: Aug 31, 2021
• Expiry date: May 3, 2038

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E10/549
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A compound having the formula Ir(LA)n(LB)3−n is disclosed wherein LA is an aza-DBF ligand and LB is an alkyl-substituted phenylpyridine ligand, wherein the compound has a structure according to Formula I: wherein A1, A2, A3, A4, A5, A6, A7, and A8 comprise carbon or nitrogen; wherein at least one of A1, A2, A3, A4, A5, A6, A7, and A8 is nitrogen; wherein ring B is bonded to ring A through a C—C bond; wherein the iridium is bonded to ring A through a Ir—C bond; wherein X is O, S, or Se; wherein R1 and R2 each independently represent mono-, di-, tri-, tetra-substitution, or no substitution; wherein R′ and R″ each independently represent mono-, di-substitution, or no substitution; wherein any adjacent substitutions in R′, R″, R1, R2, R3, R4, R5, and R6 are optionally linked together to form a ring; wherein R1, R2, R′, and R″ are each independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof; wherein …