Electrochemical properties and conductivity of poly(3-methylpyrrole/ClO4)
| Autor: | M.I. Redondo, J. Tortajada, E. Sánchez de la Blanca, M.J. González-Tejera, M.A. Raso, I. Carrillo, M.V. Garcia |
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| Rok vydání: | 2005 |
| Předmět: |
Horizontal scan rate
Conductive polymer Chemistry Mechanical Engineering Metals and Alloys Analytical chemistry Conductivity Condensed Matter Physics Electrosynthesis Electrochemistry Redox Electronic Optical and Magnetic Materials chemistry.chemical_compound Mechanics of Materials Polymer chemistry Materials Chemistry Texture (crystalline) Acetonitrile |
| Zdroj: | Synthetic Metals. 151:100-105 |
| ISSN: | 0379-6779 |
| DOI: | 10.1016/j.synthmet.2005.03.023 |
| Popis: | Electrosynthesis of conducting poly(3-methylpyrrole) has been carried out at fixed potentials of 0.5 and 0.6 V in a NaClO 4 acetonitrile solution. The electrochemical behaviour of doped-polymer films has been analysed considering the influence of the negative and positive potential limits as well as the scan rate on the voltammograms recorded in acetonitrile. From these studies a mechanism for the redox processes is proposed. Polymer morphology has been examined by scanning electron microscopy, which reveals a cauliflower and compact texture depending on the potential of synthesis and deposition time. Kinetic of conductivity decay with aging time has been determined to be dependent of exp(− t 1/2 ) with a characteristic time of the degradation process around 20 days. |
| Databáze: | OpenAIRE |
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