A new conducting charge transfer complex from a model thiophene oligomer and a Keggin-type heteropolyanion

Authors

  • Bruno Fabre,

    1. Laboratoire d'Electrochimie Moléculaire Service d'Etudes des Systèmes et Architectures Moléculaires Département de Recherche Fondamentale sur la Matière Condensée Centre d'Etudes Nucléaires, BP 85X, F-38041 Grenoble (France)
    Search for more papers by this author
  • Prof. Gérard Bidan

    Corresponding author
    1. Laboratoire d'Electrochimie Moléculaire Service d'Etudes des Systèmes et Architectures Moléculaires Département de Recherche Fondamentale sur la Matière Condensée Centre d'Etudes Nucléaires, BP 85X, F-38041 Grenoble (France)
    • Laboratoire d'Electrochimie Moléculaire Service d'Etudes des Systèmes et Architectures Moléculaires Département de Recherche Fondamentale sur la Matière Condensée Centre d'Etudes Nucléaires, BP 85X, F-38041 Grenoble (France)
    Search for more papers by this author

  • We would like to thank Dr. D. Fichou (Laboratoire des Matériaux Moléculaires–Thiais) for the gift of pure sexithiophene. We also gratefully acknowledge Drs. J. P. Travers (Laboratoire de Physique des Métaux Synthétiques–CENG), J. Gaillard (Laboratoire de Spectroscopie de Complexes Polymétalliques et de Métalloprotéines–CENG) for their helpful advice on conductivity versus temperature, EPR experiments.

Abstract

A conducting charge transfer complex between a sexithienyl radical cation and a Keggin-type heteropolyanion (PMo12Omath image) has been synthesized and characterized. These large inorganic ions confer new properties on polymers to which they are linked, for example, multiple redox exchanges, paramagnetism, electrochromism, and catalytic action. The thiophene hexamer is the best compromise between a long-conjugated system and a processable material, and can be considered a typical poly(thiophene) model, thus allowing a better understanding of the electronic interactions between the conducting polymer poly(3-methylthiophene) and the dopant anion PMo12Omath image.

Ancillary