Conduction mechanism in H-type polysiloxane-polypyrrole block copolymers

BOZKURT A., Parlak M., Ercelebi C., Toppare L. K.

JOURNAL OF APPLIED POLYMER SCIENCE, vol.85, no.1, pp.52-56, 2002 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 85 Issue: 1
  • Publication Date: 2002
  • Doi Number: 10.1002/app.10567
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.52-56
  • Middle East Technical University Affiliated: Yes


Conducting polymers of polysiloxane-polypyrrole were Synthesized by electropolymerization of the pyrrole monomer through pyrrole moieties in N-pyrrole-terminated polysiloxanes. Sodium paratoluene sulfonate was used as the electrolyte. Scanning electron microscopy (SEM) was used to determine the surface morphology of the films. The room-temperature conductivity values of the films were found to be in the range of 1.9-4.4 x 10(-4) (Omega cm)(-1), depending on the supporting electrolyte concentration. The temperature dependence of the dc conductivities of the copolymers having different dopant concentrations was investigated within the temperature range of 100-320 K. The evaluated para-meters showed that the electrical transport is dominated by variable range hopping. (C) 2002 Wiley Periodicals, Inc.