【摘要】 本文设计合成了一种查耳酮香豆素（L）,经元素分析、1H-NMR及质谱对其结构进行了表征。在乙醇溶剂中采用荧光光谱法考查了L对Li⁺、Na⁺、K⁺、Mg²⁺、Ca²⁺、Ba²⁺、Al ³⁺、Mn²⁺、Co²⁺、Ni ²⁺、Zn²⁺、Cd²⁺、Hg²⁺及Cu²⁺的荧光响应。结果表明,Cu²⁺、Mg²⁺和Al ³⁺离子可分别使L产生不同的荧光信号,Cu²⁺可以有效猝灭L在405nm处的荧光,Mg²⁺和Al ³⁺分别使L在548nm及595nm处产生新的荧光峰。L可以作为定量检测Cu²⁺、Mg²⁺和Al ³⁺离子的一种高选择性荧光化学传感器。更多还原

【Abstract】 In the paper,a chalcone-coumarin（L）was synthesized and its structure was characterized by elementary analysis,1H-NMR and mass spectra.The fluorescence response of the sensor to Li⁺,Na⁺,K⁺,Mg²⁺,Ca²⁺,Ba²⁺,Al ³⁺,Mn²⁺,Co²⁺,Ni ²⁺,Zn²⁺,Cd²⁺,Hg²⁺and Cu²⁺were investigated by the fluorescence spectrum method in ethanol solvent.The result indicated that Chalcone L exhibits different fluorescence signals only to Cu²⁺,Mg²⁺and Al ³⁺.The fluorescence of chalcone L at 405 nm was efficiently quenched by Cu²⁺.The new fluorescence peaks of chalcone L at 548 nm and 595 nm were generated by Mg²⁺and Al ³⁺respectively.The chalcone L could be useful as a highly selective fluorescent chemosensor for Cu²⁺,Mg²⁺and Al ³⁺quantitative detection.更多还原