以对碘苯胺和4-二乙胺基水杨醛为原料，在室温无溶剂条件下，固相反应合成了光致变色发光化合物4-二乙胺基水杨醛缩对碘苯胺席夫碱。利用核磁共振氢谱、质谱、红外光谱和元素分析对化合物结构进行了表征，通过紫外-可见吸收光谱、荧光光谱测定了它的发光性能。结果表明，当用254 nm 紫外光和420 nm可见光照射时，该化合物表现出良好的可逆光致变色性能；在不同极性溶剂条件下表现出良好的溶剂变色性能，同时表现出不同波长的荧光发射性能，在吡啶作溶剂条件下表现出较大的 Stoke 位移。另外，该化合物在质子 H＋和碱 OH-作用下，表现出良好的发光开关特性。该多功能席夫碱化合物在信息存储、分子开关和非线性光学材料领域具有潜在的应用价值。
A new 4-diethylamine salicylaldehyde-p-iodoaniline photochromic Schiff base (DSI)was synthesized by solid phase free-solvent condition with p-iodoaniline reacted with 4-diethylamine salicylaldehyde at room temper-ature.The chemical structure of the compound was characterized by 1 H NMR,MS,IR and elemental analysis. Its photochromic and luminescent properties were investigated by UV-Vis absorption and fluorescence spectral methods,respectively.This showed reversible photochromic switching properties in CH2 Cl2 solution with 254 nm UV light and 420 nm visible light irradiation.In addition,this compound also showed excellent solvatochro-mic and different luminescent properties in different organic solvents.It also showed excellent switching proper-ties with the addition of H+ and OH- in DMF solution.This multi-function compound showed potential appli-cation in optical information,switch and non-liner optical materials fields.
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