Electroactive Properties and Electrochemical Stability of Poly(3,4-ethylenedioxythiophene) and Poly(N-methylpyrrole) Multi-layered Films Generated by Anodic Oxidation
| Autor: | Francisco Liesa, Francesc Estrany, Elaine Armelin, José Ignacio Iribaren, Ramon Oliver, Carlos Alemán |
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| Rok vydání: | 2007 |
| Předmět: |
N-methylpyrrole
Materials science multi-layered films layer-by-layer electrodeposition Anodic oxidation Conductivity Electrochemistry poly(N-methylpyrrole) chemistry.chemical_compound chemistry Chemical engineering PEDOT:PSS Electrical resistivity and conductivity Polymer chemistry Copolymer poly(3 4-ethylenedioxythiophene) conducting polymers Poly(3 4-ethylenedioxythiophene) |
| Zdroj: | Portugaliae Electrochimica Acta v.25 n.1 2007 Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) Agência para a Sociedade do Conhecimento (UMIC)-FCT-Sociedade da Informação instacron:RCAAP Portugaliae Electrochimica Acta, Volume: 25, Issue: 1, Pages: 55-65, Published: 2007 |
| ISSN: | 1647-1571 |
| Popis: | Multi-layered films of poly(3,4-ethylenedioxythiophene), and poly(N-methylpyrrole), have been prepared using a layer-by-layer electrodeposition technique. The electrochemical properties and the conductivity of the films formed by 3, 5 and 7 layers have been compared with their homopolymers and with the copolymers prepared from 3,4-ethylenedioxythiophene and N-methylpyrrole with different concentration ratios. The electroactivity and stability of the multi-layered systems were higher than those of PEDOT homopolymer and copolymers. Furthermore, the electrochemical properties improved when the number of layers increased. In addition, the electrical conductivity of the multi-layered films is higher than those of poly(N-methylpyrrole) and copolymers, and comparable to the PEDOT homopolymers. These results indicate that multi-layered systems show better performance than their homopolymers and/or copolymers derivatives for some applications like anticorrosive coatings or sensor materials. |
| Databáze: | OpenAIRE |
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