Thermally stable fullerene derivatives and process for producing the same

US5763719A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Andreas Gugel · Mainz, DE
• Pavel Belik · Rodenbach, DE
• Klaus Müllen

Key dates

• Filing date: Sep 15, 1995
• Grant date: Jun 9, 1998
• Expiry date: Sep 15, 2015

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S977/84
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A fullerene derivative of the formula I ##STR1## where the symbols and indices have the following meanings: F is a fullerene radical of the formula (C.sub.20+2m), where m is a number from 1 to 50 PA1 R.sup.1 to R.sup.8 are identical or different and are each H, CO.sub.2 R.sup.9, CN, COR.sup.10, Cl, Br, I, F, OR.sup.11, C.sub.1 -C.sub.20 -alkyl, phenyl or H, R.sup.1 -R.sup.4 and/or R.sup.5, R.sup.7 can also be part of a cycloalipathic, cycloaromatic or cycloheteroaromatic system which in turn is substituted by C.sub.1 -C.sub.20 -alkyl, aryl, carboxyl, carbonyl, alkoxy, aryloxy, halogen, nitro, alcohol or amine, or R.sup.1 and R.sup.2, R.sup.2 and R.sup.3, R.sup.3 and R.sup.4 can together be ##STR2## where R.sup.15 -R.sup.18 are each H, C.sub.1 -C.sub.20 -alkyl, F, Cl, Br, I or phenyl, and PA1 AR is the radical of a fused cyclo-aromatic system, and n is from 1 to 20 and a process for its preparation.