Metal complexes of cyclometallated imidazo (1,2-f) phenanthridine (1,2-a:1′, 2′-c),quinazoline ligands and isoelectronic and benzannulated analogs thereof

US8691988B2 · kind B2 · utility

Assignee

• UNIVERSAL DISPLAY CORPORATION · US

Inventors

• David B. Knowles · Vandergrift, US
• Chun Lin · Yardley, US
• Peter Borden Mackenzie · Murrysville, US
• Jui-Yi Tsai · Newtown, US
• Robert W. Walters · Pittsburgh, US
• Scott Beers · Ewing, US
• Cory S. Brown · Pittsburgh, US
• Walter Yeager · Yardley, US

Key dates

• Filing date: Jul 23, 2013
• Grant date: Apr 8, 2014
• Expiry date: Jul 23, 2033

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K2102/321
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Compounds comprising phosphorescent metal complexes comprising cyclometallated imidazo[1,2-f]phenanthridine and diimidazo[1,2-a:1′,2′-c]quinazoline ligands, or isoelectronic or benzannulated analogs thereof, are described. Organic light emitting diode devices comprising these compounds are also described.