Aromatic poly(1,3,4-heterodiazoles) for use in optical devices, especially electroluminescent components

US6476184B1 · kind B1 · utility

Assignee

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Silvia Janietz · Stahnsdorf, DE
• Armin Wedel · Mering, DE

Key dates

• Filing date: May 24, 2001
• Grant date: Nov 5, 2002
• Expiry date: May 24, 2021

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K50/11
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Aromatic poly(1,3,4-heterodiazoles) include from 100 to 1,000 repeating units selected from the group consisting of in which R1, R2, R3 and R4 may be identical or different and are each an alkyl, alkoxy, phenyl, phenoxy or thiophenol group and X is S, O or N-phenyl, for use in optical devices, especially electroluminescent components.