title: Molecular structure and dynamics of water at the water-air interface studied with surface-specific vibrational spectroscopy.
abstract: Water interfaces provide the platform for many important biological, chemical, and physical processes. The water-air interface is the most common and simple aqueous interface and serves as a model system for water at a hydrophobic surface. Unveiling the microscopic (<1 nm) structure and dynamics of interfacial water at the water-vapor interface is essential for understanding the processes occurring on the water surface. At the water interface the network of very strong intermolecular interactions, hydrogen-bonds, is interrupted and the density of water is reduced. A central question regarding water at interfaces is the extent to which the structure and dynamics of water molecules are influenced by the interruption of the hydrogen-bonded network and thus differ from those of bulk water. Herein, we discuss recent advances in the study of interfacial water at the water-air interface using laser-based surface-specific vibrational spectroscopy.
authors: Max-Planck-Institut für Polymerforschung, Abteilung für Molekulare Spektroskopie, Ackermannweg 10, 55128 Mainz (Germany). bonn@mpip-mainz.mpg.de.
authors: Mischa
authors: M
authors: Bonn
authors: Yuki
authors: Y
authors: Nagata
authors: Ellen H G
authors: EH
authors: Backus
keywords: aqueous interface; molecular dynamics; sum-frequency spectroscopy; time-resolved spectroscopy; water-air interface