Graziano Giuseppe, Lee Byungkook
Faculty of Science, University of Sannio, Via Port'Arsa, 11-82100 Benevento, Italy.
Biophys Chem. 2003 Sep;105(2-3):241-50. doi: 10.1016/s0301-4622(03)00073-5.
The occurrence of entropy convergence in hydrophobic hydration is verified from available experimental thermodynamic data for both noble gases and hydrocarbons. The entropy convergence phenomenon can be reproduced by means of the scaled particle theory, provided that a temperature-dependent hard sphere diameter is used for water molecules. The calculated work of cavity creation shows a non-monotonic temperature dependence with a flat maximum slightly above 100 degrees C, irrespective of the cavity size. The corresponding cavity entropy changes converge approximately 100 degrees C, in qualitative agreement with the experimental finding.
