Probing adsorption and molecular structure at aqueous interfaces with vibrational sum frequency spectroscopy (VSFS)

COLL 44

Geraldine L. Richmond, Department of Chemistry, Department of Chemistry, University of Oregon, 1253 University of Oregon, Eugene, OR 97403-1253
Aqueous interfaces play a central role in the sustainability of our world and life on this planet. Making advances in understanding environmental, biological and technological issues that involve aqueous interfaces requires a fundamental knowledge of bonding and adsorption at these interfaces. In the studies to be presented in this symposium I will describe our most recent results in which we explore the structure and bonding that occurs at aqueous interfaces with a particular focus on studies relevant to biological and environmental issues at both the aqueous/organic and air/water interfaces. Our studies involve a combination of experimental techniques including VSFS, IR and Raman spectroscopy, ellipsometry and surface tension. The results are compared with our molecular dynamics simulations and spectral calculations that provide important complementary information to aid in a more complete understanding of molecular bonding at these interfaces.