Hetero-spiro compounds and their use as electroluminescence materials

US6329082A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Willi Kreuder · Mainz, DE
• Donald Lupo · Frankfurt am Main, DE
• Josef Salbeck · Kelkheim, DE
• Hermann Schenk · Hofheim, DE
• Thomas Stehlin · Kriftel, DE

Key dates

• Filing date: May 22, 1997
• Grant date: Dec 11, 2001
• Expiry date: May 22, 2017

Classification

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

Abstract

Hetero-spiro compounds of the formula (I), ##STR1## where PA1 .PSI. is an element of the 4th main group of the Periodic Table with the exception of carbon, preferably Sn, Ge or Si, particularly preferably Ge or Si, and PA1 K.sup.1 and K.sup.2 are, independently of one another, conjugated systems, for use in electroluminescence devices. The compounds of the formula (I) have a good solubility in customary organic solvents, improved film-forming properties and a significantly reduced tendency to crystallize.