Polarizability-Induced Vibrational Shifts for Infrared Spectroscopy of Molecular Surfaces: Xe as a Surface Probe of Hexadecanethiol Self-Assembled Monolayers and Hexane Films on Au(111).


Adsorption of atomic and molecular species on several model film surfaces is shown to lead to systematic and reproducible spectral shifts for infrared absorption peaks associated with vibrations at the film/adsorbate interface. These shifts to lower frequencies are demonstrated to be versatile spectral signatures of this exposed interface. While this is… (More)