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Redox-active conducting polymers incorporating ferrocenes. Preparation, characterization and bio-sensing properties of ferrocenylpropyl and -butyl polypyrroles |
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| Authors: | Jun ChenChee O Too Gordon G Wallace Gerhard F SwiegersAllan H White |
| Affiliation: | a Intelligent Polymer Research Institute, University of Wollongong, NSW 2522, Australia b Division of Molecular Science, Commonwealth Scientific and Industrial Research Organization (CSIRO), Bag 10, Clayton, Vic. 3169, Australia c Department of Chemistry, University of Western Australia, Crawley, WA 6009, Australia |
| Abstract: | The multi-step synthesis of the novel ferrocene-substituted pyrrole monomers, N-(3-ferrocenylpropyl)pyrrole (1), and 3-(4-ferrocenylbutyl)pyrrole (2), have been studied and optimized. A single crystal X-ray structure analysis has been performed on the synthetic intermediate 3-(4-ferrocenylbutyl)-N-(triisopropylsilyl)pyrrole. Monomers 1 and 2 can be electropolymerized to form the homopolymer, poly-2, and the copolymers, pyrrole-co-1 and pyrrole-co-2. The polymers have been characterized using cyclic voltammetry, UV-visible spectroscopy, scanning electron microscopy (SEM) and four-point probe conductivity measurements. The use of pyrrole-co-1 coatings for quantitative sensing and determination of the redox-active enzyme cytochrome C in solution has been demonstrated. |
| Keywords: | Biosensor Conducting polymers Ferrocene Pyrroles |
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