溶致变色染料掺杂复合玻璃的制备及光学性质

Preparation and optical properties of solvatochromic dye-doped composite glasses

合成了一种D-π-A型溶致变色有机染料—4-[4′-(N,N-二乙胺基)苯乙烯基]苯甲醛(4-[4′-(N,N- diethylamino)styryl]benzaldehyde,DEASB),将该染料分别掺入透光性良好的聚合物材料聚甲基丙烯酸甲酯(PMMA)、纯SiO_2溶胶—凝胶(Sol-gel)玻璃和PMMA/SiO_2Sol-gel复合玻璃三种固体基质中．研究了染料在这3种固体基质及不同溶剂中的稳态荧光性质．研究表明有机染料DEASB在固体基质中的Stokes位移(Δ■)与基质取向极化系数(Δf)之间的关系与溶液中类似,符合Lippert方程．并探讨了固体基质中掺杂浓度对染料发光性质的影响．

A kind of D-π-A type solvatochromic organic dye named 4-[4＇-（N, N-diethylamino）styryl] benzaldehyde （DEASB） was synthesized and doped in three kinds of solid matrices （PMMA, SiO2 Sol-gel glass and PMMA/SiO2 Sol-gel composite glass）. The steady-state fluorescence properties of the dye in solid matrices and different solvents were investigated. The results indicate that for the organic dye DEASB, the relationship between stokes shift （△V） and oricntational polarizability （△f） in solid matrices is similar to that in solution and obeys Lippert equation. We also investigated the influences of doping content on the fluorescent intensity.