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Electrogeneration of Poly-N-Methylpyrrole Tosylate Doped Films: Electrochemical and Morphological Study

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Resumo:In order to investigate the electrochemical behaviour and morphology under different experimental conditions of poly-N-methylpyrrole doped with sodium p-toluensulphonate (NaTsO) in aqueous medium, the doped polymer was potentiostatically synthesized at four potential values: 0.6, 0.8, 0.9 and 1.0 V. The morphological study reveals a compact texture in these polymeric films; after being submitted to a positive potential those films were wrinkled. Cyclic voltammetry was used to characterize polymer films (pNMPy/TsO). The corresponding voltammograms revealed a reversible doping/de-doping process in those films obtained at ηp = 0.8 V. Different parameters such as: negative potential limit (Ei), positive potential limit (Ef), sweep rate (v) and continuous cycling were varied.
Autores principais:González-Tejera,M.J.
Outros Autores:Martín,G. Hervás
Assunto:conducting polymers poly-N-methylpyrrole tosylate anion
Ano:2007
País:Portugal
Tipo de documento:artigo
Tipo de acesso:acesso aberto
Instituição associada:Fundação para a Ciência e Tecnologia
Idioma:inglês
Origem:SciELO Portugal

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