Azadibenzofurans for electronic applications

US10249827B2 · kind B2 · utility

Assignee

• UDC IRELAND LIMITED · IE

Inventors

• Annemarie Wolleb · Fehren, CH
• Thomas Schaefer · Liestal, CH
• Heinz Wolleb · Fehren, CH
• Ute Heinemeyer · Neustadt, DE
• Nicolle Langer · Heppenheim, DE
• Christian Lennartz · Dublin, IE
• Gerhard Wagenblast · Wachenheim, DE
• Soichi Watanabe · Mannheim, DE
• Flavio Luiz Benedito · Ludwigshafen, DE
• Heinz Hottinger · Ettingen, CH
• Oliver Dosenbach · Bad Bellingen, DE

Key dates

• Filing date: Sep 18, 2013
• Grant date: Apr 2, 2019
• Expiry date: Feb 20, 2035

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P70/50
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to compounds of formula (I), which are characterized in that they substituted by benzimidazo[1,2-a]benzimidazo-5-yl and/or benzimidazo[1,2-a]benzimidazo-2,5-ylene groups and in that at least one of the substituents B1, B2, B3, B4, B5, B6, B7 and B8 represents N; a process for their production and their use in electronic devices, especially electroluminescent devices. When used as host material for phosphorescent emitters in electroluminescent devices, the compounds of formula I may provide improved efficiency, stability, manufacturability, or spectral characteristics of electroluminescent devices.