Effect of Surface Charge on the Vibrational Dynamics of Interfacial Water

Citations Over TimeTop 10% of 2009 papers

Abstract

The effect of the structuring of interfacial water, induced by surface charge, on the ultrafast vibrational dynamics of the O-H stretch in the hydrogen bonded spectral region was studied at the H(2)O/fused silica interface. At high pH, where the electric field resulting from deprotonation of silanol groups polarizes several layers of water molecules, fast vibrational dynamics similar to the dynamics of bulk water is observed. At the neutral surface, where the structural ordering of interfacial water and the thickness of interfacial water are smaller than those at the charged surface, the vibrational lifetime of the O-H stretch becomes more than two times longer (T(1) approximately 570 fs). The longer vibrational lifetime is a result of reduced intermolecular coupling resulting from incomplete solvation of the interfacial water species.

Related Papers

• → The Theory of Info-Dynamics: Rational Foundations of Information-Knowledge Dynamics(2017)8 cited
• → The Dynamics of Belief Dynamics(1974)3 cited
• On the Dynamics in Playing the Piano(2005)
• → Dynamics of active deformable particle - Two types of active spinning motions and dynamics in external flow field -(2015)
• → The Design of Formula Car Based on Four Mechanics : Strength of Materials, Thermo Dynamics, Fluid Dynamics and Vibrational Dynamics(2010)