Publication
578
New
J. Chem., (2), 302-307, 2004
DOI: 10.1039/b309509f |
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Electrochemical functionalization of nanotube films: growth
of aryl chains on single-walled carbon nanotubes
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Pierre
R. Marcoux, Philippe Hapiot, Patrick Batail and Jean Pinson
Laboratoire de Chimie Inorganique,
Matériaux aux Interfaces (CIMI), (CNRS FRE
2447), Université d'Angers, 2 boulevard Lavoisier,
Bât. K,, 49045, Angers, France
Laboratoire de Synthèse et Electrosynthèse Organiques
(SESO), (CNRS UMR 6510), Université de Rennes 1, Campus de Beaulieu,
Bât. 10C, 35042, Rennes cedex, France. E-mail: philippe.hapiot@univ-rennes1.fr
Laboratoire d'Electrochimie Moléculaire, (CNRS UMR 7591), Université Paris
7, 2 place Jussieu, Case 7107, 75251, Paris cedex 05, France
Covalent exohedral derivatizations of HiPco nanotubes, through electrochemical
reduction of aryldiazonium salts, is described. Four different aryldiazonium
salts have been used under the same experimental conditions: 4-bromophenyl,
4-chloromethylphenyl, 4-sulfophenyl and 4-carboxyphenyl. Derivatized
samples were characterized through X-ray photoelectron spectroscopy and
micro-Raman diffusion. The evolution of the spectra (area of the D-band),
as a function of the number of grafted groups, led us to the conclusion
that the electrochemical reduction of aryldiazonium salts into radicals
gives rise to the growth of aryl chains on the sidewalls of the nanotubes. |
