COLL 307 |
| Robin L. Garrell, Department of Chemistry, Department of Chemistry, University of California at Los Angeles, Box 951569, Los Angeles, CA 90095-1569 |
| Aliphatic and aromatic thiols and disulfides typically adsorb on gold as thiolates, with formation of a polar covalent sulfur-gold bond. This phenomenon has been widely exploited as a means to form self-assembled monolayers for sensors and molecular electronics. We have shown by surface-enhanced Raman spectroscopy that cystine remains intact and cysteine dimerizes to form the disulfide, cystine, at the water-gold interface. In this presentation, these results are reconciled with recently published STM images of chiral nanoclusters of “cysteine” on gold. |
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Vibrational Analyses of Dry and Wet Surfaces
8:30 AM-11:30 AM, Tuesday, March 30, 2004 Marriott -- Grand Ballroom H, Oral
Division of Colloid and Surface Chemistry |