Issue 6, 2005
From the journal:

Physical Chemistry Chemical Physics

Counter-ions dynamics in highly plastic and conducting compounds of poly(aniline). A quasi-elastic neutron scattering study†

David Djurado,*a   Marc Bée,bc   Maciej Sniechowski,cd   Spencer Howells,e   Patrice Rannou,a   Adam Pron,a   J. P. Traversa  and  Wojciech Luznyd  

* Corresponding authors

a Laboratoire de Physique des Métaux Synthétiques, DRFMC/SI3M, (UMR CEA/CNRS/UJF 5819), CEA – Grenoble, Grenoble Cedex 9, France
E-mail: djurado@drfmc.ceng.cea.fr
Fax: (33)4 3878 5113
Tel: (33)4 3878 2049

b Institut Laue Langevin, rue Jules Horovitz, Grenoble Cedex 9, France
E-mail: bee@ill.fr

c Laboratoire de Spectrométrie Physique, Université J. Fourier, Domaine Universitaire, B.P. 87, St Martin d’Hères Cedex, France
E-mail: sniechowski@gazeta.pl

d University of Science and Technology AGH, Faculty of Physics and Nuclear Techniques, Al. Mickiwicza 30, Krakow, Poland
E-mail: luzny@novell.ftj.agh.edu.pl

e Rutherford Appleton Laboratory, ISIS, Chilton, Didcot, Oxfordshire, UK
E-mail: w.s.howells@rl.ac.uk

Abstract

Proton dynamics in films of poly(aniline) “plastdoped” with di-esters of sulfophthalic (or sulfosuccinic) acids have been investigated by using quasi-elastic neutron scattering techniques. A broad time range (10−13–10−9 s) has been explored by using four different spectrometers. In this time range, the dynamics is exclusively due to protons attached to the flexible tails of the counter-ions. A model of limited diffusion in spheres whose radii are distributed in size gives a realistic view of the geometry of molecular motions. However, it is found that the characteristic times of these motions are widely distributed over several orders of magnitude. The time decay of the intermediate scattering function is well described by a time power law. This behaviour is qualitatively discussed in connection with the structure of the systems and by comparison with other so-called complex systems.

Graphical abstract: Counter-ions dynamics in highly plastic and conducting compounds of poly(aniline). A quasi-elastic neutron scattering study

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Article information

DOI
https://doi.org/10.1039/B417071G
Article type
Paper
Submitted
08 Nov 2004
Accepted
24 Dec 2004
First published
17 Jan 2005

Phys. Chem. Chem. Phys., 2005,7, 1235-1240

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Counter-ions dynamics in highly plastic and conducting compounds of poly(aniline). A quasi-elastic neutron scattering study

D. Djurado, M. Bée, M. Sniechowski, S. Howells, P. Rannou, A. Pron, J. P. Travers and W. Luzny, Phys. Chem. Chem. Phys., 2005, 7, 1235 DOI: 10.1039/B417071G

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