Polythiophene compositions for improving organic light-emitting diode

US8334331B2 · kind B2 · utility

Assignee

• HERAEUS PRECIOUS METALS GMBH & CO. KG · DE

Inventors

• Andreas Elschner · Mülheim, DE
• Knud Reuter · Krefeld, DE
• Peter Lovenich

Key dates

• Filing date: Jun 30, 2011
• Grant date: Dec 18, 2012
• Expiry date: Jun 30, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E10/549
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to compositions which include: (a) a polythiophene containing repeating units represented by the following general formula (I),wherein X represents, for example, —CH2—CH(CH2—O—(CH2)4SO3−H+)—; and (b) further polymers, that are different than polythiophene (a), and which contain SO3− M+ or COO−M+ groups. Also disclosed are electroluminescing (EL) arrangements that contain hole-injecting layers which include such compositions.