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Electrochemical functionalization of nanotube films: growth of aryl chains on single-walled carbon nanotubes

Abstract : 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 spectrum (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 into radicals give rise to the growth of aryls chains on the sidewalls of nanotubes.
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Pierre Marcoux, Philippe Hapiot, Patrick Batail, Jean Pinson. Electrochemical functionalization of nanotube films: growth of aryl chains on single-walled carbon nanotubes. New Journal of Chemistry, Royal Society of Chemistry, 2004, 28 (2), pp.302. ⟨10.1039/B309509F⟩. ⟨cea-02528419⟩

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