Time-resolved fluorescence spectra of naphthalene doped in amorphous silica glasses

Abstract

Fluorescence spectra of naphthalene doped in amorphous silica glasses were measured by a picosecond time-correlated single-photon counting technique. The fluorescence with a peak at 375 nm, observed in the initial time region of the spectra at 5 × 10 −1 M of naphthalene, is ascribed to the second excimer formed from the ground-state dimer in amorphous silica glasses within 6 ps.