Electrosynthesis of poly(N-ethyl-3,6-carbazolediyl) catalyzed by a Ni(0)-based complex

Authors

  • Alain Siove,

    Corresponding author
    1. Laboratoire de Recherches sur les Macromolécules de l'Université Paris-Nord (Unité Associée au CNRS), Avenue J. B. Clément, 93430 Villetaneuse, France
    • Laboratoire de Recherches sur les Macromolécules de l'Université Paris-Nord (Unité Associée au CNRS), Avenue J. B. Clément, 93430 Villetaneuse, France
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  • Dominique Adès,

    1. Laboratoire de Recherches sur les Macromolécules de l'Université Paris-Nord (Unité Associée au CNRS), Avenue J. B. Clément, 93430 Villetaneuse, France
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  • Claude Chevrot,

    1. Laboratoire de Recherches sur les Macromolécules de l'Université Paris-Nord (Unité Associée au CNRS), Avenue J. B. Clément, 93430 Villetaneuse, France
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  • Gérard Froyer

    1. Centre National d'Etudes des Télécommunications, LAB-OCM/TIC; BP 40; 22301 Lannion Cedex, France
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Abstract

Poly(N-ethyl-3,6-carbazolediyl) was synthesized by electroreduction of the NiBr2/2,2′-bipyridine/3,6-dibromo-N-ethylcarbazole system in N,N-dimethylacetamide. Both gel permeation chromatography analyses of the polymer formed and electrochemical studies of the system during the course of polymerization in homogeneous phase point at a constant efficiency of the catalytic complex. The latter generates potentially active species which contain the transition metal inserted into a C[BOND]Br bond. Mechanisms of formation of the growing chains are proposed on the basis of the electrochemical behaviour of the catalytic system. Chemical doping of the polymer leads to a material the conductivity of which is in the range 10−4 < σ/(Ω−1 · cm−1) < 10−3.

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