A simple theory of aqueous non-electrolyte solutions is developed to describe the effect of solvent correlation on solute–solute interactions. It is formulated in terms of a Landau expansion of the free energy density, obtained from the Ornstein–Zernike relations, and given specific motivation through a generalised Pople model for water structure.A functional form of the solute–solute interaction of both hydrophobic and polar solutes in aqueous solutions is investigated. The theory accounts for the experimentally observed solute–solute attraction and gives a more precise meaning to empirical solute–solute potentials.
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Marc̆elja et al. (1977) studied this question.
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