Electrochemistry of methanofullerenes embedded in hydrophobic ammonium cation films

N. F. Gol'dshleger, E. V. Ovsyannikova, A. E. Goryachev, P. A. Troshin, N. M. Alpatova

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The electrochemical behavior of several methanofullerenes, including methyl-C61-propionic acid esters (Ph-C61-(CH 2)2COOCnH2n + 1, n = 1-4, 8), in tetraoctyl- and didodecyldimethylammonium bromide films on conducting glass was studied. A cyclic voltammetry study showed that the introduction of methanofullerene derivatives in a cation matrix led to redox transformations of these compounds at potentials accessible for aqueous solutions. The shift of their formal potentials toward positive values is mainly caused by the electrostatic interactions of the reduction products (methanofullerene anions) with the matrix cations. The chemical stability of the reduction products is provided by their hydrophobic microenvironment in the matrix in all cases. This makes it possible to perform quasireversible redox transformations in neutral aqueous media. The duration of the adjustment of the structure of the coating depends on the solvent used for its preparation, the length of the alkyl radical in the ester group of methanofullerene, and the length of the alkyl chain between the cyclopropane fragment and the COOCnH2n + 1 group. The redox potentials of methanofullerene Ph-C61-(CH 2)2COOC2H5 incorporated in the didodecyldimethylammonium bromide film lie in the range of higher negative values relative to the potentials of the compound in the tetraocty-lammonium bromide film.

Original languageEnglish
Pages (from-to)324-335
Number of pages12
JournalRussian Journal of Electrochemistry
Volume49
Issue number4
DOIs
Publication statusPublished - 2013
Externally publishedYes

Keywords

  • Absorption spectra
  • Aqueous medium
  • Cyclic voltammetry
  • Methanofullerene derivatives
  • Phenyl-C-propionic acid esters
  • Phenyl-C-butyric acid methyl ester (PCBM)
  • Redox transformations
  • Salt matrix
  • Tetraoctyl- and didodecyldimethylammonium bromides

Fingerprint

Dive into the research topics of 'Electrochemistry of methanofullerenes embedded in hydrophobic ammonium cation films'. Together they form a unique fingerprint.

Cite this