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Zeitschrift für Physikalische Chemie

International journal of research in physical chemistry and chemical physics

Editor-in-Chief: Rademann, Klaus

12 Issues per year


IMPACT FACTOR 2017: 1.144
5-year IMPACT FACTOR: 1.144

CiteScore 2017: 1.08

SCImago Journal Rank (SJR) 2017: 0.495
Source Normalized Impact per Paper (SNIP) 2017: 0.495

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2196-7156
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Hydrophobic Interactions by Monte Carlo Simulations

Orkid Coskuner / Ulrich K. Deiters
Published Online: 2009-09-25 | DOI: https://doi.org/10.1524/zpch.2006.220.3.349

Summary

The structural and thermodynamic properties of liquid water and of the dilute solutions of methane and ethane in water were calculated by Monte Carlo simulations in the temperature range 298 K to 318 K and 298 K to 333 K, respectively. The nonpolar molecules were modeled as one- and two-center Lennard–Jones particles; for the interaction potential of water a modified TIP5P model was used. The results indicate that the nonpolar solutes tend to aggregate with increasing temperature. Methane molecules preferably form water-separated pairs, even at higher temperatures, whereas for ethane contact pairs are more likely. For the thermodynamic conditions studied here, the residual chemical potential of water is a linear function of temperature.

Keywords: Hydrophobic Interactions; TIP5P; Chemical Potential; Water; Computer Simulation

About the article

Received: 2005-12-13

Accepted: 2006-01-11

Published Online: 2009-09-25

Published in Print: 2006-03-01


Citation Information: Zeitschrift für Physikalische Chemie, Volume 220, Issue 3/2006, Pages 349–369, ISSN (Online) 2196-7156, ISSN (Print) 0942-9352, DOI: https://doi.org/10.1524/zpch.2006.220.3.349.

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