Abstract
Origin of heat capacity changes in a "nonclassical" hydrophobic interaction.
Highlights
The early work of Edsall[1] illustrated the effect of nonpolar groups in raising the apparent heat capacities of solutes in aqueous solution
While the nature of this structuring remains a topic of debate,[6] it is universally accepted that these water molecules possess a higher heat capacity and a lower entropy than bulk water
Hydrophobic interactions, in which nonpolar surfaces are shielded from bulk water, are classically characterized by a favourable entropic binding signature together with a negative change in heat capacity at constant pressure (DCp).[3,4,5,7]
Summary
The early work of Edsall[1] illustrated the effect of nonpolar groups in raising the apparent heat capacities of solutes in aqueous solution. Hydrophobic interactions, in which nonpolar surfaces are shielded from bulk water, are classically characterized by a favourable entropic binding signature together with a negative change in heat capacity at constant pressure (DCp).[3,4,5,7] the foundations of the latter in solvent reorganisation are not universally accepted.[8]
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