Intermolecular Dynamics of Perylene in Polymer Matrices during the Drop-Casting Process Probed by Fluorescence and Droplet Mass Changes.

This work examines the drop-casting process of a perylene-doped polymer film by monitoring the changes in fluorescence and droplet mass. The mass is then used to estimate the mean intermolecular distance r( t) changes during the casting process. At a low perylene concentration (0.

Fluorescence spectral changes of perylene in polymer matrices during the solvent evaporation process.

This work examined concentration-dependent variations in the fluorescence spectra of solutions of perylene and PMMA in toluene during the process of evaporation, using fluorescence microscopy. At low perylene concentrations, the fluorescence spectra of the resulting perylene/PMMA films exhibited a structural band originating from monomeric perylene. Increasing the concentration resulted in the appearance of new, broader bands due to the formation of two excimer species.