【摘要】 通过Debus-Radziszewski、Suzuki-Miyaura和Knoevenagel缩合反应,设计合成了一种新型的咪唑衍生物L,并使用傅里叶变换红外光谱和核磁共振氢谱对合成化合物进行了结构表征。不同极性溶剂中光物理性质和密度泛函理论计算结果表明该系列化合物具有典型的分子内电荷转移（Intramolecular charge transfer,ICT）效应;紫外-可见吸收和荧光发射光谱证实它表现出聚集诱导猝灭（Aggregation-caused quenching,ACQ）性质。进一步的光物理性质测试表明化合物L在THF/H₂O混合溶液中可实现对2,4,6-三硝基苯酚（苦味酸,picric acid,PA）的检测,检测限为3.7×10^-6 mol/L。更多还原

【Abstract】 A novel imidazole derivative L with electron-donating ability was designed and synthesized via the reactions of Debus-Radziszewski, Suzuki-Miyaura and Knoevenagel and characterized by FT-IR, ¹H NMR. The photophysical properties in different polar solvents and density functional theory calculation results demonstrated that L exhibited typical intramolecular charge transfer（ICT） effect. The UV-Vis spectra and fluorescence spectra showed that L exhibited aggregation-caused quenching（ACQ） properties. The test results show that L can achieve the detection for PA（picric acid） in THF/H₂O solution, and the limit of detection for PA is 3.7×10^-6 mol/L.更多还原