4H-imidazo[1,2-a]imidazoles for electronic applications

US10431750B2 · kind B2 · utility

Assignee

• UDC IRELAND LIMITED · IE

Inventors

• Thomas Schaefer · Liestal, CH
• Teresa Marina Figueira Duarte · Hong Kong, CN
• Christian Schildknecht · Schifferstadt, DE
• Nicolle Langer · Heppenheim, DE
• Ute Heinemeyer · Neustadt, DE
• Heinz Wolleb · Fehren, CH
• Soichi Watanabe · Mannheim, DE
• Christian Lennartz · Dublin, IE
• Gerhard Wagenblast · Wachenheim, DE
• Annemarie Wolleb · Fehren, CH
• Kristina Bardon · Waldshut-Tiengen, DE
• Flavio Luiz Benedito · Ludwigshafen, DE

Key dates

• Filing date: Mar 3, 2016
• Grant date: Oct 1, 2019
• Expiry date: May 21, 2036

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 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.