Pipino, A.
and Michalski, M.
(2008),
Climbing the Vibrational Ladder to Probe the OH Stretch of HNO<sub>3</sub> on Silica, Journal of Physical Chemistry C
(Accessed October 31, 2024)
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Climbing the Vibrational Ladder to Probe the OH Stretch of HNO3 on Silica
Published
Author(s)
, Marcin Michalski
Abstract
The first and second OH-stretching overtones of HNO3 adsorbed on atomically smooth amorphous SiO2 have been probed by evanescent wave cavity ring-down spectroscopy (EW-CRDS) using a broadband high-finesse total-internal-reflection-ring resonator. In contrast to the OH-stretching fundamental, the overtone spectra reveal relatively sharp features under conditions of extensive H-bonding. Based on a comparison with calculated vibrational frequencies, we find HNO3 exists predominantly as the HNO3-H2O complex on the surface under ambient conditions. EW-CRDS yields polarized, absolute absorption spectra for overtone and combination transitions at sub-monolayer coverage, enabling unparalleled spectroscopic studies of monolayers, thin films, and nano-scale materials. The TIR-ring resonator in particular permits facile exploration of the visible and near-IR regions with a single optical configuration.Citation
Journal of Physical Chemistry C
Pub Type
Journals
Keywords
absorption, cavity ring-down, evanescent wave, finesse, overtone, resonator
Citation
Issues
If you have any questions about this publication or are having problems accessing it, please contact reflib@nist.gov.
Created October 16, 2008