13C and 1H nuclear spin lattice magnetic relaxation in undoped polyacetylene |
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| Authors: | F. Masin G. Gusman R. Deltour |
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| Affiliation: | Physique des Solides, Faculté des Sciences (C.P. 233), Université Libre de Bruxelles, Bd. du Triomphe, B-1050 Bruxelles, Belgium |
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| Abstract: | Pulsed NMR spin lattice relaxation measurements on 13C and 1H nuclei in undoped trans-polyacetylene have been carried out between 6 and 295 K. The results indicate that the spin lattice relaxation is due to equilibrium fluctuations of the orientational order parameter for the protons while the carbon relaxation can be attributed to their coupling to paramagnetic impurities. In this temperature range no contribution of solitons has been detected in the relaxation mechanisms. |
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