Electroluminescent polymers

US7820305B2 · kind B2 · utility

Assignee

• Merck Patent GmbH · DE

Inventors

• Niels Schulte · Kelkheim, DE
• Susanne Heun · Bad Soden, DE
• Ingrid Bach · Hofheim, DE
• Philipp Stössel · Frankfurt, DE
• Kevin Treacher · Manchester, GB

Key dates

• Filing date: Jul 6, 2005
• Grant date: Oct 26, 2010
• Expiry date: Oct 30, 2027

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S428/917
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to phosphorescent copolymers comprising trifunctional triplet emitters. The polymers according to the invention are highly soluble, readily accessible synthetically and more suitable for use in organic light-emitting diodes than are comparative materials in accordance with the prior art.