COLL 381 |
| Douglas J. Tobias1, Eric Brown2, Pavel Jungwirth3, and Martin Mucha3. (1) Department of Chemistry, University of California, Irvine, CA 92697-2025, (2) Department of Chemistry, University of California, Irvine, Irvine, CA 92697, (3) J. Heyrovsky Institute of Physical Chemistry, Czech Academy of Sciences, Dolejskova 3, 182 23 Prague 8, Czech Republic |
| The surfaces of aqueous ionic solutions have traditionally been regarded as devoid of ions. Molecular dynamics simulations have recently predicted that polarizable anions adsorb to the air/water interface. The presence of ions at aqueous interfaces has implications for the heterogeneous chemistry of aqueous aerosol particles in the atmosphere. This prediction has led to several experimental investigations. This talk will survey the simulation and experimental results, with a focus on vibrational spectroscopy. Vibrational sum frequency generation spectra of water at salt solution/air interfaces computed from molecular dynamics simulations will be compared to experimental data to confirm the predictions of the simulations, as well as to provide insight into the interpretation of the spectra in terms of the interfacial structure. |
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Vibrational Analyses of Dry and Wet Surfaces
8:30 AM-11:30 AM, Wednesday, March 31, 2004 Marriott -- Grand Ballroom H, Oral
Division of Colloid and Surface Chemistry |