Reduction of the hydrophobic attraction between charged solutes in water
- 2 December 2003
- journal article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 119 (23) , 12049-12052
- https://doi.org/10.1063/1.1632902
Abstract
We examine the effective force between two nanometer scale solutes in water by Molecular Dynamics simulations. Macroscopic considerations predict a strong reduction of the hydrophobic attraction between solutes when the latter are charged. This is confirmed by the simulations which point to a surprising constancy of the effective force between oppositely charged solutes at contact, while like charged solutes lead to significantly different behavior between positive and negative pairs. The latter exhibit the phenomenon of ``like-charge attraction" previously observed in some colloidal dispersions.Keywords
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