Effect of 'Ph-NH-CH_2-' group on the luminescence properties of sol-gel silica xerogel

摘要

The effect of Ph-NH-CH_2-group (Ph: phenyl) on the luminescence properties of silicca xerogel by sol-gel method has been investigated. The absorption spectra, excitation spectra and emission spectra of Ph-NH-CH_2- group embedded in the network of silica xerogel have a red shift with increasing the ratios of Ph-NH-CH_2-group in the samples. The relative photoluminescence (PL) intensity fo the hybrid silica xerogel sample decreases with increasing the ratios of Ph-NH-CH_2-group. From the complex luminescent centers, the novel luminescence propertis have been observed from the hybrid silica xerogel sample containing Ph-NH-CH_2-group.