Langmuir. 2017 Nov 28;33(47):13468-13479. doi: 10.1021/acs.langmuir.7b03076. Epub 2017 Nov 14.

Dependence of the Electrochemical Redox Properties of Fullerenes on Ionic Liquids.

Langmuir : the ACS journal of surfaces and colloids

Hiroyuki Ueda, Tomoaki Yoshimura, Katsuhiko Nishiyama, Soichiro Yoshimoto

PMID: 29084429 DOI: 10.1021/acs.langmuir.7b03076

Abstract

Control of the electrochemical properties of fullerenes via the chemical modification approach has attracted considerable attention. However, surface modification of fullerene cages with various functional groups can lead to the destruction of their original structures. Herein, we report a simple approach for controlling the electrochemical properties of fullerene thin films formed on Au(111) electrodes in various ionic liquids (ILs). A total of eight reversible redox couples for six reductive and two oxidative processes were observed for fullerenes in ammonium- and pyrrolidinium-based ILs. The redox potentials, the differences between two successive redox potentials, the average values of these potential differences for fullerene reduction, and the electrochemical band gaps of fullerene films in various ILs were found to depend on the cation and its alkyl chain length, the anion, and the chemical structure of the fullerene. Highly charged C

Publication Types

• Journal Article
• Research Support, Non-U.S. Gov't