COLL 276 |
| Anoma Mudalige and Jeanne E. Pemberton. Department of Chemistry, University of Arizona, 1306 E. University Blvd, Tucson, AZ 85721 |
| The elucidation of molecular-level structure of thin liquid films at solid interfaces is of fundamental importance for the understanding of a wide variety of interfacial phenomena. However, this task remains challenging with traditional spectroscopic techniques, because the large number of molecules in the bulk liquid phase dominates the signal originating from interfacial molecules. A series of novel vibrational spectroscopic techniques based on the process of emersion that were developed in this laboratory can be used to overcome this problem. Their use is demonstrated here in studies of Ag surfaces modified with self-assembled monolayers of 11-mercatoundecanoic acid emersed from solutions of different pH. Emersed layer thicknesses were measured using ellipsometry. Emersion Raman spectroscopy and emersion IRRAS were used to investigate molecular structure at these interfaces. |
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Vibrational Analyses of Dry and Wet Surfaces
6:00 PM-8:00 PM, Monday, March 29, 2004 Disneyland -- North Exhibit Hall, Poster
Division of Colloid and Surface Chemistry |