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Journal of Solid State Electrochemistry

, Volume 10, Issue 3, pp 185–191 | Cite as

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

  • Martin Krondak
  • Gabriela Broncová
  • Sergiy Anikin
  • Andreas Merz
  • Vladimir M. MirskyEmail author
Original Paper

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.

Keywords

Conductive polymer Sensor Conductivity HCl Alkoxybipyrroles Alkoxypolybipyrroles 

Notes

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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Copyright information

© Springer-Verlag 2005

Authors and Affiliations

  • Martin Krondak
    • 1
  • Gabriela Broncová
    • 1
  • Sergiy Anikin
    • 2
  • Andreas Merz
    • 2
  • Vladimir M. Mirsky
    • 3
    Email author
  1. 1.Department of Analytical ChemistryInstitute of Chemical Technology PraguePragueCzech Republic
  2. 2.Institute of Organic ChemistryUniversity of RegensburgRegensburgGermany
  3. 3.Institute of Analytical Chemistry, Chemo- and BiosensorsUniversity of RegensburgRegensburgGermany

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