Abstract: A series of rare earth β-diketone complexes doped silica gel have been prepared by Sol-Gel technique. The photoacoustic and fluorescence spectra of these gel have been measured. Compared with the solid complexes, emission peaks of these doped silica gel show redshift while photoacoustic absorption peaks blueshift. The intramolecular energy transfer processes of Eu-β-diketones doped silica gel have been studied.

Key words: Eare earth β-diketone complexes, Silica gel, Photoacoustic spectroscopy, Fluorescence spectroscopy, Intramolecular energy transfer