Photoluminescence of Phenyl-and Methylsubstituted Cyclosiloxanes

摘要

The observation of strong blue photoluminescence from several different types of phenylated Si-containing molecules upon excitation with UV light was investigated by measuring the emission and excitation spectra of the luminescence as well as the time dependence of the phosphorescence. A range of variously substituted, Si-containing cyclic compounds was synthesized and analyzed in order to identify the origin of the photoluminescence and to determine the role of the substituents in the effect. The two classes of compounds studied were 2,3-diphenyl-substituted silacyclobutenes and stereoregularly-built phenylated cyclosiloxanes.