Transition metal complexes containing substituted imidazole carbene as ligands and their application in OLEDs

US9059412B2 · kind B2 · utility

Assignee

• UNIVERSAL DISPLAY CORPORATION · US

Inventors

• Lichang Zeng · Lawrenceville, US
• Bin Ma · Plainsboro, US
• Zeinab Elshenawy · Holland, US
• Chuanjun Xia · Lawrenceville, US
• Chun Lin · Yardley, US

Key dates

• Filing date: Mar 6, 2013
• Grant date: Jun 16, 2015
• Expiry date: Dec 20, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E10/549

Abstract

Compounds having a metal M complexed to a ligand L containing a substituted imidazole carbene group, which is represented Formula (I), below:wherein ring B is a 5-member aromatic heterocyclic ring containing at least one heteroatom selected from the group consisting of N, O, and S; wherein ring A is a 5-membered or 6-membered carbocyclic or heterocyclic ring; wherein RA represents mono, di, tri, tetra substitutions or no substitution; wherein R1 represents mono, di, or tri substitution or no substitution; wherein each RA, R1 and R2 is independently selected from various possible substituents; wherein Z1 is nitrogen or carbon; and wherein the ligand is optionally linked with other ligands to comprise a tridentate, tetradentate, pentadentate or hexadentate ligand. Devices, such as organic light emitting devices (OLEDs) that comprise such compounds are also provided.