Poly(Neutral Red) in Multilayer Electrode Systems

Authors

  • G. Broncová Department of Analytical Chemistry, University of Chemistry and Technology, Prague
  • T. V. Shishkanova Department of Analytical Chemistry, University of Chemistry and Technology, Prague
  • P. Matějka Department of Physical Chemistry, University of Chemistry and Technology, Prague
  • D. Kubáč Centre Algatech, Institute of Microbiology, Academy of Sciences of the Czech Republic, Třeboň
  • V. Král Department of Analytical Chemistry, University of Chemistry and Technology in Prague, Prague

Keywords:

conducting polymer, poly(neutral red), modification, multilayer electrode

Abstract

The present work describes the properties of neutral red polymer after electrochemical modification using a multilayer concept. The aim of this modification was to enhance the potentiometric properties of poly(neutral red) (PNR) electrodes by improving their binding characteristics. The electrochemical modification involved the use of a multilayer settlement of film coating both to affect selectivity and to suppress the platinum support influence, which can also have an effect on the electrode signal. The first layer was polythiophene, which shielded the platinum and strengthened the polymerization of the next layer. The second layer consisted of polypyrrole, able to react non-specifically with almost all anions. Selectivity was introduced to the layered system by the final layer of PNR controlling the selectivity of the potentiometric response, which is also affected by other layers. It was observed that the variation of the layer order (in the systems of polythiophene, polypyrrole and PNR) and thickness can be used to control the selectivity, and selectivity order, of electrodes to anions of carboxylic acids. The shielding of platinum influence to electrode response by the introduction of an additional polymeric layer was proved.

Published

2016-11-15

How to Cite

Broncová, G., Shishkanova, T. V., Matějka, P., Kubáč, D., & Král, V. (2016). Poly(Neutral Red) in Multilayer Electrode Systems. Chemické Listy, 110(11), 800–807. Retrieved from http://w.chemicke-listy.cz/ojs3/index.php/chemicke-listy/article/view/140

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