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Dynamics of flexible counter-ions in conducting polyaniline: a quasielastic neutron-scattering study

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Abstract.

Conducting polyaniline protonated with sulphonic flexible counter-ions was investigated by quasielastic incoherent neutron scattering. In addition to their role in electrical properties, the flexible counter-ions also increase the elasticity of the samples. As in the case of more rigid counter-ions, polymer chains appear as very stiff objects whose dynamics is completely outside the investigated time scale. Conversely, the counter-ion dynamics was proved to be of major importance in charge transport since a dynamical transition is observed precisely in the temperature range where the electronic properties change from a metallic to a semiconducting regime.

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Authors and Affiliations

  1. Institut Laue-Langevin, 6 rue Jules Horowitz, B.P. 156, 38042 Grenoble Cedex, France, , , , , , FR

    M. Bée & M.A. González

  2. Laboratoire de Spectrométrie Physique, Université Joseph Fourier Grenoble-I, B.P. 87, 38402 Saint-Martin d’Hères Cedex, France, , , , , , FR

    D. Djurado & D. Marque

  3. Institut Charles Sadron, 6 rue Boussingault, 67083 Strasbourg Cedex, France, , , , , , FR

    J. Combet

  4. CEA Grenoble, DRFMC, SI3M, LPMS, 17 avenue des Martyrs, 38054 Grenoble Cedex 9, France, , , , , , FR

    P. Rannou & B. Dufour

Authors
  1. M. Bée
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  2. D. Djurado
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  3. J. Combet
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  4. M.A. González
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  5. P. Rannou
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  6. B. Dufour
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  7. D. Marque
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Additional information

Received: 18 July 2001 / Accepted: 24 October 2001

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ID="*"Corresponding author. (Fax: +33-476/20-7688, E-mail: bee@ill.fr)

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Bée, M., Djurado, D., Combet, J. et al. Dynamics of flexible counter-ions in conducting polyaniline: a quasielastic neutron-scattering study . Appl Phys A 74 (Suppl 1), s402–s404 (2002). https://doi.org/10.1007/s003390101104

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  • DOI: https://doi.org/10.1007/s003390101104

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