Structural and Dynamic Heterogeneity of Capillary Wave Fronts at Aqueous Interfaces.

Autor: Zhou T; Department of Chemistry and the Materials Science and Engineering Program, Washington State University , Pullman, 99164-2920 Washington, United States., McCue A; Department of Chemistry and the Materials Science and Engineering Program, Washington State University , Pullman, 99164-2920 Washington, United States., Ghadar Y; Department of Chemistry and the Materials Science and Engineering Program, Washington State University , Pullman, 99164-2920 Washington, United States., Bakó I; Institute of Organic Chemistry Research Centre for Natural Sciences, Hungarian Academy of Sciences , Magyar Tudosók Körútja 2, P.O. Box 286, 1519 Budapest, Hungary., Clark AE; Department of Chemistry and the Materials Science and Engineering Program, Washington State University , Pullman, 99164-2920 Washington, United States.
Jazyk: angličtina
Zdroj: The journal of physical chemistry. B [J Phys Chem B] 2017 Sep 28; Vol. 121 (38), pp. 9052-9062. Date of Electronic Publication: 2017 Sep 19.
DOI: 10.1021/acs.jpcb.7b07406
Abstrakt: Using a unique combination of slab-layering analyses and identification of truly interfacial molecules, this work examines water/vapor and water/n-hexane interfaces, specifically the structural and dynamic perturbations of the interfacial water molecules at different locations within the surface capillary waves. From both the structural and dynamic properties analyzed, it is found that these interfacial water molecules dominate the perturbations within the interfacial region, which can extend deep into the water phase relative to the Gibbs dividing surface. Of more importance is the demonstration of structural and dynamic heterogeneity of the interfacial water molecules at the capillary wave front, as indicated by the dipole orientation and the structural and dynamic behavior of hydrogen bonds and their networks.
Databáze: MEDLINE