Abstract
The n.m.r. relaxation times of liquids in heterogeneous systems, where a molecule is either close to an interface, or has diffusive motions which are in some way geometrically bounded, often show features such as T1 minima, resembling those found in bulk solids. These measurements have nearly always been interpreted using the theory of relaxation for bulk materials. This frequently leads to the conclusion that, as a result of proximity to the interface, there is a reduction of the molecular mobility of several orders of magnitude compared to the bulk liquid. This result often conflicts with those of other measurements such as quasielastic neutron scattering. Another interpretation which takes into account the restricted nature of the diffusion and which gives the correct molecular mobilities is given. These results place a doubt on the correctness of the conclusions of the majority of proton n.m.r. relaxation time measurements in heterogeneous systems.
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© 1985 D. Reidel Publishing Company
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Tabony, J. (1985). Interpretation of Proton N.M.R. Spin-Lattice Relaxation Time Minima in Heterogeneous Systems by the Effects of Bounded Two-Dimensional Diffusion. Comparison with Neutron Scattering Measurements. In: Daudel, R., Korb, JP., Lemaistre, JP., Maruani, J. (eds) Structure and Dynamics of Molecular Systems. Structure and Dynamics of Molecular Systems, vol 1. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-5351-2_14
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DOI: https://doi.org/10.1007/978-94-009-5351-2_14
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