Electrochemistry of tert-Butylcalix[8]arene-C60 Films Using a Scanning Electrochemical Microscope-Quartz Crystal Microbalance

David E. Cliffel, Allen J. Bard, Seiji Shinkai

Research output: Contribution to journalArticle

39 Citations (Scopus)

Abstract

The electrochemical reduction of tert-butylcalix[8]arene-C60 particle films was studied using the scanning electrochemical microscope combined with a quartz crystal microbalance (QCM) for several electrolytes in MeCN. Complexation of the fullerene within the film results in a negative shift of the peak potential of the first cathodic wave by about 400 mV compared to the reduction of a pure C60 film. The QCM indicates a mass loss during reduction of the film. Even in electrolytes where C60 anions normally remain in the surface film, a loss of fullerene electrochemical activity occurs. The complex breaks apart upon reduction of the fullerene center, with the fullerene escaping from the calixarene basket into the MeCN solution, leaving the calixarene as an insoluble film on the electrode surface. These results show that the π electron sharing of the complex is decreased by the additional electron density added to the fullerene by reduction to C60-.

Original languageEnglish
Pages (from-to)4146-4151
Number of pages6
JournalAnalytical chemistry
Volume70
Issue number19
DOIs
Publication statusPublished - Oct 1 1998

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry

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