Motional Effect in Surface Sum-Frequency Vibrational Spectroscopy
- 21 May 2001
- journal article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 86 (21), 4799-4802
- https://doi.org/10.1103/physrevlett.86.4799
Abstract
Fast orientational motion of molecules at a surface can affect the sum-frequency vibrational spectra of the surface. Calculation shows that the effect is significant if the molecular orientation varies over a broad range within the vibrational relaxation time. The stretch vibration of the free OH bonds at the vapor/water interface is used to illustrate the importance of the effect.Keywords
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