Conduction mechanism in H-type polysiloxane-polypyrrole block copolymers

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

JOURNAL OF APPLIED POLYMER SCIENCE, cilt.85, sa.1, ss.52-56, 2002 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 85 Sayı: 1
  • Basım Tarihi: 2002
  • Doi Numarası: 10.1002/app.10567
  • Dergi Adı: JOURNAL OF APPLIED POLYMER SCIENCE
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.52-56
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

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.