Dielectric spectra broadening as the signature of dipole-matrix interaction. II. Water in ionic solutions

Evgeniya Levy, Alexander Puzenko, Udo Kaatze, Paul Ben Ishai, Yuri Feldman

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Abstract

In this, the second part of our series on the dielectric spectrum symmetrical broadening of water, we consider ionic aqueous solutions. If in Part I, dipole-dipole interaction was the dominant feature, now ion-dipole interplay is shown to be the critical element in the dipole-matrix interaction. We present the results of high-frequency dielectric measurements of different concentrations of NaCl/KCl aqueous solutions. We observed Cole-Cole broadening of the main relaxation peak of the solvent in the both electrolytes. The 3D trajectory approach (described in detail in Part I) is applied in order to highlight the differences between the dynamics and structure of solutions of salts on one hand and dipolar solutes on the other hand.

Original languageAmerican English
Pages (from-to)6864
Number of pages1
JournalJournal of Chemical Physics
Volume136
Issue number11
DOIs
StatePublished - 21 Mar 2012

Bibliographical note

Funding Information:
This work has been supported by Israel Science Foundation (ISF) (Grant No. 465/11).

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