title: Charge asymmetry at aqueous hydrophobic interfaces and hydration shells.
abstract: Guilty as charged: Water is often modeled as a dielectric continuum, but the molecular structure of water is asymmetric. Two ions that have a virtually identical size, shape, and structure, but an opposite charge sign have been investigated to see whether charge makes a fundamental difference to water structuring. The spectroscopic data for the hydration and interface structures are found to be remarkably different for opposite charges.
authors.affiliation: Laboratory for fundamental BioPhotonics (LBP), Institute of Bioengineering (IBI), School of Engineering (STI), École Polytechnique Féderale de Lausanne (EPFL), 1015 Lausanne (Switzerland).
authors.forename: Rüdiger
authors.initials: R
authors.lastname: Scheu
authors.forename: Blake M
authors.initials: BM
authors.lastname: Rankin
authors.forename: Yixing
authors.initials: Y
authors.lastname: Chen
authors.forename: Kailash C
authors.initials: KC
authors.lastname: Jena
authors.forename: Dor
authors.initials: D
authors.lastname: Ben-Amotz
authors.forename: Sylvie
authors.initials: S
authors.lastname: Roke
mesh_terms: D004574:Electromagnetic Fields; D006860:Hydrogen Bonding; D057927:Hydrophobic and Hydrophilic Interactions; D007477:Ions; D008958:Models, Molecular; D012995:Solubility; D014867:Water / Q000737:chemistry*
chemical_list: D007477:Ions; D014867:Water
keywords: emulsions; interfaces; ions; laser spectroscopy; water chemistry