Geraldine L. Richmond

TL;DR: Her research group uses a combination of linear and nonlinear optical methods, thermodynamic measurements, and theory to characterize interactions at aqueous surfaces, metal and semiconductor surfaces in contact with liquids and adsorbates, and liquid/liquid interfaces.

TL;DR: Vibrational studies that selectively probe molecular structure at CCl4/H2O and hydrocarbon/h2O interfaces show that the hydrogen bonding between adjacent water molecules at these interfaces is weak, in contrast to generally accepted models of water next to fluid hydrophobic surfaces that suggest strong hydrogen bonding.

TL;DR: A review of the current state of the field of optical second harmonic generation as it pertains to the study of interfacial phenomena can be found in this paper, where the experimental and theoretical studies discussed examine fundamental issues regarding the source of the nonlinear polarizability at the interface.

TL;DR: The surfaces of aqueous solutions of NaF, NaCl, NaBr, and NaI have been examined using vibrational sum-frequency spectroscopy Spectra of these salts in mixtures of HOD/H2O/D2O have been used to provide insight into how simple salts alter the hydrogen bonding structure of water in the surface region as the anion is changed, indicating the presence of anions in the interfacial region.

TL;DR: An overview of recent VSFS studies of the molecular structure and orientation of molecules at the vapor-water interface and the interface between water and an immiscible organic liquid is presented, with particular emphasis on studies that compare the molecular properties and adsorbate behavior at these two different but related interfaces.