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Dynamics of Liquids in Confined Geometries

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Abstract

An overview of several NMR studies of liquids in confined geometries is presented. First, the NMR relaxation rates, 1/T1, 1/T1ρ, and 1/T2 were measured for several molecular liquids confined to porous silica glasses with pore radii in the range from 12 Å to 100 Å as a function of temperature, pore size, and frequency. The experimental relaxation data were interpreted in terms of bulk, surface, and topological contributions using the following expression: (cong thuc) where 1/Tib and 1/Tis are the bulk and the surface layer relaxation rates, ε is the thickness of the surface layer, R is the pore radius, and Ai(ω) represents the pure topological effect.

Second, the pressure effects on the dynamics of the confined liquid of acetonitrile-d3 were also investigated. Third, the natural abundance of13C spin lattice relaxation rates for CS2 confined to porous silica glasses provided information about confinement effects on the angular momentum behavior of this simple liquid.

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Authors and Affiliations

  1. Department of Chemistry, School of Chemical Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA

    Shu Xu & J. Jonas

  2. Laboratoire de Physique de la Matière Condensée, Ecole Polytechnique, CNRS 91128, Palaiseau, France

    J.-P. Korb

Authors
  1. Shu Xu
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  2. J.-P. Korb
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  3. J. Jonas
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Xu, S., Korb, JP. & Jonas, J. Dynamics of Liquids in Confined Geometries. MRS Online Proceedings Library 346, 925–936 (1994). https://doi.org/10.1557/PROC-346-925

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  • DOI: https://doi.org/10.1557/PROC-346-925

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