芪3在铅-锡-氟磷酸盐玻璃中的聚集及光谱特性

采用低温熔融法制备了有机染料芪3掺杂的不同浓度的铅-锡-氟磷酸盐玻璃，通过对掺杂玻璃激发光谱、发射光谱和吸收光谱的测试，研究了芪3在无机玻璃中的聚集状态和光谱性能。 结果表明，有机染料芪3以单体和二聚物的形式共存于无机玻璃中，和芪3单体分子的激发峰相比，二聚物的激发峰位于短波段，随掺杂浓度的增加，掺杂玻璃的发射峰发生红移，同时在荧光光谱中观察到浓度猝灭现象；芪3分子与无机玻璃通过亲水作用发生了键合，从而导致芪3在无机玻璃中的吸收光谱和发射光谱比在乙醇溶液中出现较大红移；与芪3在乙醇溶液中的荧光强度相比，芪3分子受无机玻璃的“笼”化作用有效的提高了其荧光强度。

Molecular Aggregation and Spectrum Properties of Stilbene 3 Doped Lead-Tin-Fluorophosphate Glass

Lead-tin-fluorophosphate(PTFP) glasses with different concentrations of organic dye stilbene 3 were prepared by low temperature melting.The molecular aggregation and spectrum properties of stilbene 3 doped lead-tin-fluorophosphate glass were studied by means of emission spectra,excitation spectra and absorption spectra measurements.The results show that stilbene 3 dimers coexist with its monomers in inorganic glass.Compared with the excitation peak of stilbene 3 monomer,the excitation peak of stilbene 3 dimer is in the range of shorter wave band.As the concentration of stilbene 3 in the doped PTFP glass increased,the emission peak was red shifted and the concentration quenching of stilbene 3 was observed in the emission spectra.Compared stilbene 3 in PTFP glass with that in ethanol,a remarkable red shift of the absorption and emission spectra in the glass was found.The phenomenon is explained by the bond effect between stilbene 3 and matrix glass by hydrophilic interaction.And a much higher fluorescence intensity of stilbene 3 in the inorganic glass than that in ethonal is attributed to the "cage" effect.