Base inhibited oxidative polymerization of 3,4-ethylenedioxythiophene with iron(III)tosylate

Bjorn Winther Jensen*, Dag W. Breiby, Keld West

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

134 Citations (Scopus)


Very high conductivities (>1000 S/cm) were obtained in poly(3,4-ethylenedioxythiophene) films oxidized with Fe(III)tosylate when the acidity during the polymerization process was controlled using a basic inhibitor. The best results were obtained with pyridine as inhibitor. The films could either be polymerized from a solution of 3,4-ethylenedioxythiophene (EDT), Fe(III)tosylate and pyridine or by vapor phase polymerization (VPP) of EDT on a surface coated with Fe(III)tosylate and pyridine. By incorporating non-conducting adhesive (up to 75% vol.) in the vapor phase polymerized PEDT system, films with activation energy of 1/3 the value of pure PEDT, were obtained. The reason for this phenomenon could not be explained by changes in the PEDT structure investigated with grazing incidence X-ray diffraction.

Original languageEnglish
Pages (from-to)1-4
Number of pages4
JournalSynthetic Metals
Issue number1-3
Publication statusPublished - 2005 Sept 20
Externally publishedYes


  • Coatings
  • Polymer/polymer interfaces
  • Polythiophene and derivatives
  • X-ray diffraction

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Polymers and Plastics


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