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Persistent URL http://purl.org/net/epubs/work/30376
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Record Id 30376
Title Counter-ions dynamics in highly plastic and conducting compounds of poly(aniline). A quasi-elastic neutron scattering study
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.
Keywords Materials , Chemistry , ISIS 2005
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Language English (EN)
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Journal Article Phys Chem Chem Phys 7 (2005): 1235-1240. Is in proceedings of: QENS 2004, Arcachon, September 2004. doi:10.1039/b417071g 2005