设计合成了1-氰基-中氮茚-3-[N-(2-氨基乙基)]甲酰胺(化合物3). 通过IR,1H NMR对其结构进行了表征,测试了其紫外光谱和荧光光谱,研究了其对Cu2+、Zn2+、Ni2+、Co2+、Mg2+、Na+、K+和Ca2+的识别作用,发现Zn2+、Ni2+、Co2+、Mg2+、Na+、K+和Ca2+对化合物3的荧光光谱几乎没有影响,但Cu2+对化合物3有非常强大亲和力,Cu2+可以使化合物3的荧光发射明显猝灭,化合物3在DMSO溶剂中作为铜离子荧光探针,受常见离子干扰较小,对于铜离子有着较高的选择性.We report here the synthesis of 1-cyano-indolizine-3-[N-(2-aminoethyl)]carboxamide(No.3 compound)and the study of it as fluorescent probe for Cu2+ ions. The structure of the compound 3 was determined by IR,1H NMR. Its UV and fluorescence spectra were measured. The influences of eight metal ions such as Cu2+,Zn2+,Ni2+,Co2+,Mg2+,Na+,K+and Ca2+ on its fluorescence property was studied. Spectroscopic study revealed that the compound 3 had rather strong affinity toward Cu2+. The specificity of the compound 3 toward Cu2+was determined. Nearly no fluorescence intensity changes were observed in emission spectra with Zn2+,Ca2+,Na+,K+,Mg2+but Ni2+ and Co2+. However,under identical conditions,the study showed fluorescence quenching from Cu2+. So we have developed a new fluorescent sensor. It showed high selectivity toward Cu2+ in DMSO
