ESR and conductivity investigations on electrochemically synthesized polyfuran and polythiophene


Demirboga B., Onal A.

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, cilt.61, sa.6, ss.907-913, 2000 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 61 Sayı: 6
  • Basım Tarihi: 2000
  • Doi Numarası: 10.1016/s0022-3697(99)00388-1
  • Dergi Adı: JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.907-913
  • Anahtar Kelimeler: polymers, variable range hopping, electrical conductivity, ELECTRON-SPIN-RESONANCE, POLYMERS, POLYACETYLENE, 2-METHYLFURAN, DERIVATIVES, FURAN
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

ESR studies have been carried out on ClO4--doped polyfuran (PF) and BF4--doped polythiophene (PT) films synthesized by constant potential electrolysis. Variation of spin concentration and linewidth of ESR signal with temperature were investigated. The temperature dependence of conductivity supported the Mott's variable range hopping mechanism for PT and PF freestanding films. Temperature dependence of activation energy indicated that hopping is the dominating mechanism of charge transport. (C) 2000 Elsevier Science Ltd. All rights reserved.