Electrochemical synthesis of sulfonated polypyrrole in FSO3H/acetonitrile solution


ŞAHİN Y., Aydin A., Udum Y. , Pekmez K., Yildiz A.

JOURNAL OF APPLIED POLYMER SCIENCE, vol.93, no.2, pp.526-533, 2004 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 93 Issue: 2
  • Publication Date: 2004
  • Doi Number: 10.1002/app.20473
  • Title of Journal : JOURNAL OF APPLIED POLYMER SCIENCE
  • Page Numbers: pp.526-533
  • Keywords: polypyrroles, self-doped polypyrrole, electrochemistry, fluorosulfonic acid, conducting polymers, CONDUCTIVITY, COMPOSITES, BIOSENSOR, POLYMERS, PYRROLE, ANILINE

Abstract

The incorporation of SO3- groups into a polypyrrole backbone was successfully carried out using FSO3H/acetonitrile medium. The degree of sulfonation (sulfonation or sulfur-to-nitrogen ratio) of polymer was controlled by varying FSO3H concentration while the film was being electrodeposited. The cyclic voltammograms of the electrodeposited films were taken between -1.00 and +2.00 V (versus Ag/AgCl) in blank solution. A substantial effect on the electrical conductivity was observed upon the incorporation of SO3- groups in the polypyrrole polymeric chain. The elemental analysis results of the freshly prepared and reduced films give independent evidence that the SO3- groups are covalently bound to the structure. FTIR, UV-Vis, spectroscopy and SEM techniques were used to characterize the electrosynthesized polypyrrole films. (C) 2004 Wiley Periodicals, Inc.