The microscopic structure of the hydrogen-bond network of water alcohol mixtures was studied using X-ray Raman scattering (XRS). To systematically examine how the hydrogen-bond network of water is affected by an increasing size of the hydrophobic group, small linear alcohols (methanol, ethanol, and propanol) in constant mole fractions were studied. The oxygen K-edge spectra were not altered upon hydration of the alcohols beyond a simple superposition of signals from alcohol and water. The experiment thus indicates that alcohols do not have a substantial effect on the structure of the hydrogen-bond network of water. In particular, no apparent breaking or forming of the hydrogen bonds is observed to take place in the overall structure. In addition, there is no indication of changes in the tetrahedrality of the hydrogen-bond network of water in the vicinity of alcohol molecules.
机构:
Boston Univ, Ctr Polymer Studies, Boston, MA 02215 USA
Boston Univ, Dept Phys, Boston, MA 02215 USABoston Univ, Ctr Polymer Studies, Boston, MA 02215 USA
Han, Sungho
Kumar, Pradeep
论文数: 0引用数: 0
h-index: 0
机构:
Rockefeller Univ, Ctr Studies Phys & Biol, New York, NY 10021 USABoston Univ, Ctr Polymer Studies, Boston, MA 02215 USA
Kumar, Pradeep
Stanley, H. Eugene
论文数: 0引用数: 0
h-index: 0
机构:
Boston Univ, Ctr Polymer Studies, Boston, MA 02215 USA
Boston Univ, Dept Phys, Boston, MA 02215 USABoston Univ, Ctr Polymer Studies, Boston, MA 02215 USA