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Chemosensitive properties of poly-4,4′-dialkoxy-2,2′-bipyrroles

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Abstract

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.

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Acknowledgements

The authors greatly acknowledge H. Breznová for preliminary experiments, O.S. Wolfbeis, V. Král and R. Volf for their fruitful discussions. M.K. and G.B. acknowledge Socrates/Erasmus for financing their stay in the Regensburg University and the Ministry of Education of the Czech Republic for the grant MSM6046137307.

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Authors and Affiliations

  1. Department of Analytical Chemistry, Institute of Chemical Technology Prague, Technicka 5, 166 28, Prague, Czech Republic

    Martin Krondak & Gabriela Broncová

  2. Institute of Organic Chemistry, University of Regensburg, 93040, Regensburg, Germany

    Sergiy Anikin & Andreas Merz

  3. Institute of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, 93040, Regensburg, Germany

    Vladimir M. Mirsky

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  1. Martin Krondak
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  2. Gabriela Broncová
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  3. Sergiy Anikin
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  4. Andreas Merz
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  5. Vladimir M. Mirsky
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Correspondence to Vladimir M. Mirsky.

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Krondak, M., Broncová, G., Anikin, S. et al. Chemosensitive properties of poly-4,4′-dialkoxy-2,2′-bipyrroles. J Solid State Electrochem 10, 185–191 (2006). https://doi.org/10.1007/s10008-005-0069-8

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  • DOI: https://doi.org/10.1007/s10008-005-0069-8

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