Use of polymers containing isolated chromophores as electroluminescence materials

US5856434A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Roland Stern · Wiesbaden, DE
• Hermann Schenk · Hofheim, DE
• Josef Salbeck · Kelkheim, DE
• Thomas Stehlin · Kriftel, DE
• Ullrich Scherf · Golm, DE
• Klaus Müllen
• Gunther Leising · Graz, AT

Key dates

• Filing date: Feb 16, 1996
• Grant date: Jan 5, 1999
• Expiry date: Feb 16, 2016

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K85/649
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Use in electrooptical switching and display devices of a polymer comprising conjugatively linked chromophore segments whose emission properties are determined by the emission properties of the individual chromophore segments. Electroluminescence devices comprising the polymers of the present invention have, inter alia, a high color purity. The polymers used according to the present invention enable, in particular, blue and white electroluminescence to also be achieved.