Krondak, Martin and Broncova, Gabriela and Anikin, Sergey and Merz, Andreas and Mirsky, Vladimir M. (2006) Chemosensitive properties of poly-4,4'-dialkoxy-2,2'-bipyrroles. JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 10 (3). pp. 185-191. ISSN 1432-8488, 1433-0768
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Chemosensitive properties of 4,4'-dimethoxy-2,2'-bipyrrole and 4,4'-dibuthoxy-2,2'-bipyrrole were investigated. These new conductive polymers were polymerized by cyclic voltammetry on the platinum and gold interdigitated electrodes designed for 2- and 4-point measurement of lateral conductivity. Thus, obtained polymers demonstrated high sensitivity to HCl in the parts per million concentration range. Kinetics of the gaseous HCl influence on the ratios of conductivities measured by 2- and 4-point techniques was analyzed. Some response of the polymers conductance towards NH3, NO and oxygen was also observed, but with much lower sensitivity than towards HCl. In aqueous solutions, the polymer conductivity was pH dependent; in comparison with 4,4'-dibuthoxy-2,2'-bipyrrole, the conductivity range of the methoxy derivative was shifted to acidic range for about two pH units. A possibility to use the pH dependence for the development of enzymatic biosensors with pH transducing was demonstrated.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | PH SENSOR; ELECTROCHEMICAL SYNTHESIS; CONDUCTING POLYPYRROLE; GAS SENSORS; POLYANILINE; FILMS; FABRICATION; TECHNOLOGY; TRANSISTOR; COMPOSITE; conductive polymer; sensor; conductivity; HCl; alkoxybipyrroles; alkoxypolybipyrroles |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Analytische Chemie, Chemo- und Biosensorik > Chemo- und Biosensorik (Prof. Antje J. Bäumner, formerly Prof. Wolfbeis) Chemistry and Pharmacy > Institut für Organische Chemie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 22 Feb 2021 06:18 |
| Last Modified: | 22 Feb 2021 06:18 |
| URI: | https://pred.uni-regensburg.de/id/eprint/34878 |
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