Crossref journal-article
AIP Publishing
The Journal of Chemical Physics (317)
Abstract

The connection between diffusion and solvent exchanges between first and second solvation shells is studied by means of molecular dynamics simulations and analytic calculations, with detailed illustrations for water exchange for the Li+ and Na+ ions, and for liquid argon. First, two methods are proposed which allow, by means of simulation, to extract the quantitative speed-up in diffusion induced by the exchange events. Second, it is shown by simple kinematic considerations that the instantaneous velocity of the solute conditions to a considerable extent the character of the exchanges. Analytic formulas are derived which quantitatively estimate this effect, and which are of general applicability to molecular diffusion in any thermal fluid. Despite the simplicity of the kinematic considerations, they are shown to well describe many aspects of solvent exchange/diffusion coupling features for nontrivial systems.

Bibliography

Møller, K. B., Rey, R., Masia, M., & Hynes, J. T. (2005). On the coupling between molecular diffusion and solvation shell exchange. The Journal of Chemical Physics, 122(11).

Authors 4
  1. Klaus B. Møller (first)
  2. Rossend Rey (additional)
  3. Marco Masia (additional)
  4. James T. Hynes (additional)
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Dates
Type When
Created 20 years, 5 months ago (March 17, 2005, 11:25 p.m.)
Deposited 2 years, 1 month ago (Aug. 1, 2023, 4:25 p.m.)
Indexed 1 month ago (July 30, 2025, 6:44 a.m.)
Issued 20 years, 5 months ago (March 15, 2005)
Published 20 years, 5 months ago (March 15, 2005)
Published Online 20 years, 5 months ago (March 21, 2005)
Published Print 20 years, 5 months ago (March 15, 2005)
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