Baibarac, M., Baltog, I., Mihut, L., Mevellec, J. Y. & Lefrant, S. (2009) Electropolymerization of N-Ethylcarbazole on Single Walled Carbon Nanotubes-Cyclic Voltammetry, Raman and FTIR Studies. J. Nanosci. Nanotechnol. 9 6195–6203.
Added by: Laurent Cournède (2016-03-10 21:41:23)
|Type de référence: Article
Numéro d'identification (ISBN etc.): 1533-4880
Clé BibTeX: Baibarac2009a
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Mots-clés: carbon nanotubes, Composites, conducting polymers, Electrochemical Functionalization, Electrochemical oxidation, ir, polymers, sers, vinylcarbazole
Créateurs: Baibarac, Baltog, Lefrant, Mevellec, Mihut
Collection: J. Nanosci. Nanotechnol.
Consultations : 8/455
Indice de consultation : 3%
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The electrochemical polymerization of N-ethyl carbazole (EK) on carbon nanotubes (CNs) films immersed in a LiClO(4)/acetonitrile solution was studied by cyclic voltammetry. Cyclic voltammo-grams recorded on a blank Pt electrode were compared with those obtained when CNs films were deposited on a Pt plate. In the latter case, the oxidation maximum is not clearly observed. Using the Raman scattering studies, oligomers of poly(N-ethyl carbazole) (PEK) on CNs are shown to be formed. A covalent functionalization of CNs with the PEK oligomers is demonstrated by FTIR spectroscopy studies. The formation of new C-C covalent bonds between CNs and the benzene ring of PEK induces steric hindrance effects that are shown in FTIR spectra by the increase in the intensity of the absorption band at 1072 cm(-1) attributed to the vibration of C-H in plane deformation of aromatic ring. The influence of the monomer and the supporting electrolyte concentration as well as the sweep rate on the polymerization conditions in the case of the composites based on the PEK oligomers and CNs were also investigated.
Added by: Laurent Cournède