三爪结构萘乙酰胺衍生物与过渡金属离子的螯合荧光增强

Chelation- enhanced Fluorescence of a Tripodal Naphthylacetamide Derivative with Transition Metal Ions

合成了具有三爪结构的化合物三-(1-萘乙酰胺乙基)胺(1),它对具有荧光猝灭能力的过渡金属离子具有荧光增强的效应.比较不同的过渡金属离子存在时上述化合物溶液的荧光光谱和吸收光谱变化,可以发现:在利用荧光光谱进行检测时必须注意过程中引起荧光增强和猝灭的机制,这将对考察配体与金属离子间配位能力大小作出正确估计有着重要的帮助.

A tripodal naphthylacetamide derivative (compound 1) used as a new fluorescence chemical sensor for detection of transition metal ions has been synthesized and studied in this work. An enhancement of fluorescence intensity of this compound in solution can be observed clearly after introduction of the metal ions. Comparing fluorescence and absorption spectra of all studied metal ions, one would draw the conclusion that upon using the fluorescence spectra for assays, the mechanism of the fluorescence enhancement or quenching should be taken into consideration, which is important to the evaluation of the complexation of ligand and metal ions.