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