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How the Liquid-Liquid Transition Affects Hydrophobic Hydration in Deeply Supercooled Water

2004/11/30 by Dietmar Paschek
Engineering · Materials Science · Physics and Astronomy · #Material Dynamics and Properties #Phase Equilibria and Thermodynamics #Theoretical and Computational Physics #cond-mat.soft #cond-mat.stat-mech

paper · pdf · doi:10.1103/physrevlett.94.217802

published as Phys. Rev. Lett. 94, 217802 (2005) · 4 pages, 4 figures, twocolumn Revtex, modified text applied changes to figure 1, 2d, 3, 4

arxiv created 2005/03/21 · openalex publication_date 2005/06/02 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We determine the phase diagram of liquid supercooled water by extensive computer simulations using the TIP5P-E model. We find that the transformation of water into a low density liquid in the supercooled range strongly enhances the solubility of hydrophobic particles. The transformation of water into a tetrahedrally structured liquid is accompanied by a minimum in the hydration entropy and enthalpy. The corresponding change in sign of the solvation heat capacity indicates a loss of one characteristic signature of hydrophobic hydration. The observed behavior is found to be qualitatively in accordance with the predictions of the information theory model of Garde et al.

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