Polymerization of pyrrole on polyether, polyester and polyetherester-iron(III) chloride coordination complexes
| Autor: | Jan F. Rabek, B. J. Qu, Bernd Krische, Henryk Kereszti, Julia Lucki, W. F. Shi |
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| Rok vydání: | 1991 |
| Předmět: |
chemistry.chemical_classification
Materials science Ethylene oxide Mechanical Engineering Metals and Alloys Polymer Condensed Matter Physics Polypyrrole Chloride Electronic Optical and Magnetic Materials Polyester chemistry.chemical_compound chemistry Polymerization Mechanics of Materials Polymer chemistry Materials Chemistry medicine Iron(III) chloride Pyrrole medicine.drug |
| Zdroj: | Synthetic Metals. 45:335-351 |
| ISSN: | 0379-6779 |
| DOI: | 10.1016/0379-6779(91)91789-d |
| Popis: | Poly(ethylene oxide) (poly(oxy-1,2-ethanediyl)), polyester (poly(β-propiolactone) or poly(2-oxetanone)) and polyetherester (poly(1,5-di-oxepan-2-one)) form highly viscous liquid complexes with iron(III) chloride at a weight ratio of polymer/FeCl3 equal to 7:3. These complexes placed in the vapour of pyrrole initiate its polymerization. Polypyrrole composites obtained in this way have conducting properties of 2–3 × 10−3 S cm−1. However, their electroactivity differs very much depending on the polymer-FeCl3 complex used for polymerization. These polypyrrole composites exhibit increased conductivity under UV (254 nm) irradiation. Polypyrrole polymerized on poly(ethylene oxide)-FeCl3 complex has very good electrochemical properties and shows very promising features such as high activity and high reversibility of the active material. Polymerization of pyrrole on polymer-FeCl3 complexes is a very useful method, because it is achieved without electrodes and supporting electrolytes. The morphological structures of polypyrrole composites differ very much depending on the polymer-FeCl3 complex used for pyrrole polymerization. UV-Vis, FT-IR, ESCA, Mossbauer and ESR spectroscopies and SEM microscopy have been employed to study the structure of polypyrrole composites. |
| Databáze: | OpenAIRE |
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