CONDUCTIVE PROPERTIES OF POLY(4-VINYLPYRIDINE) POLY(DIMETHYLSILOXANE) BLOCK-COPOLYMERS DOPED WITH TETRACYANOQUINODIMETHANE

NUGAY N., KUCUKYAVUZ Z., KUCUKYAVUZ S.

POLYMER, vol.34, no.22, pp.4649-4654, 1993 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 34 Issue: 22
  • Publication Date: 1993
  • Doi Number: 10.1016/0032-3861(93)90697-9
  • Journal Name: POLYMER
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.4649-4654
  • Keywords: POLY(4-VINYLPYRIDINE), POLY(DIMETHYLSILOXANE), BLOCK COPOLYMERS, DOPING, 4-PROBE METHOD, ELECTRICAL CONDUCTIVITY
  • Middle East Technical University Affiliated: No

Abstract

Poly(4-vinylpyridine)-poly(dimethylsiloxane) (P4VP-PDMS) block copolymers with various compositions were prepared by anionic polymerization. The 4VP block was quaternized with methyl iodide and reacted with 7,7',8,8'-tetracyanoquinodimethane (TCNQ), which is in both anion radical (TCNQ-.) and neutral form (TCNQ0). The products were then characterized by H-1 nuclear magnetic resonance and Fourier-transform infra-red spectroscopy, scanning electron microscopy and differential scanning calorimetry techniques. The electrical conductivities of processable and flexible films of these block copolymers were measured with the four-probe method and found to be as high as 10(-2) S cm-1. The optimal TCNQ0 doping for which the conductivities are highest were also determined.