Ionically conducting side chain liquid crystal polymer electrolytes

Gillian S. McHattie, Corrie T. Imrie*, Malcolm D. Ingram

*Corresponding author for this work

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

The synthesis and characterisation is described of a new liquid crystalline side-chain polymer based on a predominantly poly(ethylene oxide) backbone attached to which via flexible spacers are mesogenic groups. The thermal behaviour and ionic conductivities of this polymer and its complex with LiClO4 are compared to those of a structurally analogous but amorphous polymer. The variation of the ionic conductivity as a function of scaled inverse temperature (Tg/T) differs for the two systems. For the amorphous complex the ionic mobility is coupled to structural relaxations of the polymer and becomes very small at Tg. By contrast for the liquid crystalline complex there appears to be a decoupling of the ion motions from structural relaxations. This remarkable observation is thought to imply a new conduction mechanism.

Original languageEnglish
Pages (from-to)1151-1154
Number of pages4
JournalElectrochimica Acta
Volume43
Issue number10-11
DOIs
Publication statusPublished - 30 Apr 1998

Keywords

  • Conduction mechanism
  • Ionic conductivity
  • Liquid crystal
  • Polymer electrolyte

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry

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