This work was supported by ANR 2010 BLAN 942 03 “LimOuzIne”. We thank F. Ganachaud, B. Jönsson, G. Karlström, and H. Wennerström for useful discussions and input and C. Labbez and D. Bouttes for their help on the pH-dependence calculation of the surface potential.
Why Are Hydrophobic/Water Interfaces Negatively Charged?†
Article first published online: 24 APR 2012
Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Angewandte Chemie International Edition
Volume 51, Issue 23, pages 5625–5628, June 4, 2012
How to Cite
Roger, K. and Cabane, B. (2012), Why Are Hydrophobic/Water Interfaces Negatively Charged?. Angew. Chem. Int. Ed., 51: 5625–5628. doi: 10.1002/anie.201108228
- Issue published online: 30 MAY 2012
- Article first published online: 24 APR 2012
- Manuscript Revised: 13 FEB 2012
- Manuscript Received: 22 NOV 2011
- ANR. Grant Number: 2010 BLAN 942 03
- carboxylic acids;
- hydrophobic effect;
Impure at heart: A pH-dependent negative charge of the interface between a hydrophobic phase and water results from the reaction of hydroxide ions with traces of fatty acids, contained in the hydrophobic phase (see scheme). This reaction explains the uptake of hydroxide ions by the interface with a large free energy change.