Journal
CHEMICAL PHYSICS LETTERS
Volume 470, Issue 1-3, Pages 1-6Publisher
ELSEVIER
DOI: 10.1016/j.cplett.2009.01.016
Keywords
-
Funding
- NSF Science and Technology Center of Advanced Materials for Purification of Water with Systems [CTS-0120978]
Ask authors/readers for more resources
Phase-sensitive sum-frequency vibrational spectroscopy was used to obtain the OH and OD stretch spectra of the imaginary part of the nonlinear susceptibility, Im chi((2))(s) (omega(IR)), for H2O/vapor, D2O/vapor, and 2:1 H2O-D2O/vapor interfaces that explicitly characterize their resonances. They all exhibit a positive and a negative resonance band in the bonded-OH region, clearly different from those deduced from fitting of the vertical bar chi((2))(s) (omega(IR))vertical bar(2) spectra, and from MD simulations. The broad continuum is characteristic of inhomogeneously broadened resonances associated with interfacial water species of various hydrogen-bonding geometries and strengths. Spectral changes due to excess ions at the interfaces support the picture. (C) 2009 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available