A quasielastic neutron scattering study of the self-diffusion coefficients for the homologous series of 4,4′-di-n-alkyloxyazoxybenzenes

M. Bée Laboratoire de Spectrométrie Physique, Université Joseph Fourier, B.P. 87, 38402, Saint-Martin D'Hères CEDEX, France

A. J. Dianoux Institut Laue-Langevin, B.P. 156X, 38042, Grenoble CEDEX, France

J. A. Janik Henryk Niewodniczański Institute of Nuclear Physics, ul. Radzikowskiego 152, 31-342, Kraków, Poland

J. M. Janik Laboratory of Chemical Physics, Faculty of Chemistry of the Jagiellonian University, ul. Karasia 3, 30-060, Kraków, Poland

R. Podsiadly Laboratory of Chemical Physics, Faculty of Chemistry of the Jagiellonian University, ul. Karasia 3, 30-060, Kraków, Poland

Abstract

Incoherent quasielastic neutron scattering measurements performed with high resolution (∼ 1 μcV) have provided the diffusion coefficients for translation of four members of the 4,4′-di-n-alkyloxyazoxybenzene series in their nematic phases. An odd-even effect in these coefficients was observed. The results were compared with those previously obtained by Noack via the NMR technique. There is fairly good agreement between his NMR and our QNS results.

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A quasielastic neutron scattering study of the self-diffusion coefficients for the homologous series of 4,4′-di-n-alkyloxyazoxybenzenes

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A quasielastic neutron scattering study of the self-diffusion coefficients for the homologous series of 4,4′-di-n-alkyloxyazoxybenzenes

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