Construction of a metallofullerene La@C82/artificial lipid film-modified electrode device and its electron transfer

Naotoshi Nakashima, Mie Sakai, Hiroto Murakami, Takamasa Sagara, Takatsugu Wakahara, Takeshi Akasaka

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Functional electrode devices modified with cast films of metallofullerene La@C82-A solely and of metallofullerene-artificial lipids were constructed, and the aqueous electrochemistry of the electrodes was investigated. Tridodecylmethylammonium bromide (1), which forms a multimolecular bilayer membrane structure, was used as the artificial lipid. The electron-transfer reactions of the modified electrodes were examined by means of electrochemical techniques. Almost no electrochemistry was observed for the La@C82-A film-coated electrode. In sharp contrast with this result, a La@C82-A/1-coated electrode was found to exhibit well-defined cyclic voltammograms with major cathodic peak potentials at 0.28, -0.69, and -1.0 V (vs SCE), which would correspond to the first, second, and third reduction of La@C82-A, respectively. The observed cyclic voltammograms were stable for potential cycling. The first reduction process was found to be stable for the negative-end potential hold, while the second and third reduction processes were unstable. The higher stability of the first reduction state of La@C82-A would be due to the formation of a closed shell structure like La@C82-A anion in o-dichlobenzene. La@C82 embedded in the lipid film on the electrode was rather stable for dioxygen.

Original languageEnglish
Pages (from-to)3523-3525
Number of pages3
JournalJournal of Physical Chemistry B
Volume106
Issue number14
DOIs
Publication statusPublished - Apr 11 2002

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Lipids
lipids
electron transfer
Electrodes
electrodes
Electrons
Electrochemistry
electrochemistry
membrane structures
Membrane structures
Bromides
Anions
casts
bromides
Negative ions
Oxygen
anions
cycles

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

Cite this

Construction of a metallofullerene La@C82/artificial lipid film-modified electrode device and its electron transfer. / Nakashima, Naotoshi; Sakai, Mie; Murakami, Hiroto; Sagara, Takamasa; Wakahara, Takatsugu; Akasaka, Takeshi.

In: Journal of Physical Chemistry B, Vol. 106, No. 14, 11.04.2002, p. 3523-3525.

Research output: Contribution to journalArticle

Nakashima, Naotoshi ; Sakai, Mie ; Murakami, Hiroto ; Sagara, Takamasa ; Wakahara, Takatsugu ; Akasaka, Takeshi. / Construction of a metallofullerene La@C82/artificial lipid film-modified electrode device and its electron transfer. In: Journal of Physical Chemistry B. 2002 ; Vol. 106, No. 14. pp. 3523-3525.
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