A Molecular Torsion Balance Study: A Nearby Anionic Group Exerts Little Influence on Hydrophobic Interactions between Nonpolar Surfaces.

Ling, Xiujun; Wilcox, Craig S.

Polar groups have a solvent ordering effect on water and therefore may affect hydrophobic binding energies for nearby lipophilic surfaces. This would mean that determinations of excess surface free energy association energies require consideration of nearby polar functional groups. This paper reports results of a study to measure this possible effect. It was concluded from the models used here that an anionic polar group nearby a hydrophobic surface has little or no effect on the magnitude of hydrophobic association.

SURFACE energy; HYDROPHOBIC interactions; HYDROPHOBIC surfaces; BINDING energy; FREE surfaces; FUNCTIONAL groups

Chemistry - A European Journal, 2019, Vol 25, Issue 61, p14010

0947-6539

Academic Journal

10.1002/chem.201901208