Picosecond Vibrational Energy Relaxation of Surface Hydroxyl Groups on Colloidal Silica

摘要

Time resolved measurements of picosecond vibrational population decay of chemisorbed species on high surface area colloidal silica at room temperature have been performed. The influence of solvent on OH relaxation and the variation in observed relaxation rates are discussed in terms of the vibrational level structure and surface coordination of each adsorbate. (Author)