Inorganic and Hybrid (organic-inorganic) Sol-Gel Glasses doped with Organic Molecules: Fluorescence Line Narrowing, Persistent Hole-Burning and Spectral Diffusion

Abstract

We used spectral line narrowing techniques (site selection spectroscopy and persistent spectral hole-burning) to investigate the vibronic visible spectra of different porphyrins included in various sol-gel matrices. Also, quinizarin and a quinizarin derivative have been studied. The main aim of this work is to compare pure inorganic matrices and hybrid (organic-inorganic) matrices in which organic groups are permanently attached to the inorganic squeleton.