SOLVENT-ELECTRONIC STATE INTERACTIONS MEASURED FROM THE GLASSY TO THE LIQUID-STATE .2. FLUORESCENCE LINE NARROWING SPECTROSCOPY IN GLYCEROL

Fluorescence line narrowing spectroscopy is extended to the study of liquid state dynamics. Measurements are made on solutions of dimethyl-s-tetrazine in glycerol from room temperature to below the glass transition. The structural broadening identified in the preceding paper is related to a relaxation function by the use of a simple configuration coordinate model. This relaxation function is approximately 150 times faster than the structural relaxation function measured by other experiments, showing that electronic state solvation is sensitive to a unique aspect of the structural dynamics of the liquid.