COLL 379 |
| Andrea B. Voges and Franz M. Geiger. Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208 |
| Biogenic emissions are composed of volatile organic compounds (VOCs) that can react with atmospheric OH and ozone. These gas phase reactions produce partially oxidized organic species that are often surface active. Using the surface-selective nonlinear optical spectroscopy sum frequency generation (SFG) in broadband mode, we studied a partially oxidized VOC, namely menthenol, adsorbed to silica surfaces. Menthenol contains one double bond belonging to an aliphatic C-6 ring. Following the ring-breaking interaction of ozone with menthenol at the surface, we are in the unique position to monitor heterogeneous processes relevant to atmospheric surface chemistry with surface specificity, in real time, and at ambient temperatures. |
|
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 |