RhB/SiO_2凝胶的吸收与发射光谱  

Absoption and Photoluminescence Spectra of RhB/SiO_2 Gel

作　　者：冀会辉[1] 李清山[1] 

机构地区：[1]曲阜师范大学物理系,山东曲阜273165

出　　处：《光电子．激光》2002年第9期969-971,共3页Journal of Optoelectronics·Laser

基　　金：山东省自然科学基金资助项目 (Y98A10 0 13 )

摘　　要：将有机染料若丹明 B(Rh B)以溶胶 -凝胶方法镶嵌于 Si O2 凝胶载体中 ,测量了样品的吸收光谱和发光光谱。发现 ,以凝胶玻璃作载体 ,染料的集聚程度降低 ,发光光谱发生红移。认为 ,与凝胶介孔的弱极性环境和激发态分子的偶极矩的减小有关。Phodamine B(RhB) was embedded in a matrix of silica gel glass by the sol gel method.Absorption and photoluminescence spectra were obtained.We found that the degree of aggregation decreases for the SiO 2 may be regarded as a hydroxylic,relatively polar environment,less polar than water although controversy still exists on the role of water in causing aggregation.Photoluminescence red shift was observed which may be interpreted as reflecting a decrease in the dipole moment of the exited molecule.

关 键 词：溶胶-凝胶方法 若丹量B RHB 集聚程度 偶极矩 吸收光谱 发光光谱 

分 类 号：O648.124[理学—物理化学] O433.5[理学—化学]