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首页> 中文期刊> 《湖南文理学院学报（自然科学版）》 >基于检测铜离子的香豆素水合肼希夫碱荧光探针的研究

基于检测铜离子的香豆素水合肼希夫碱荧光探针的研究

         
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A novel coumarin derivative was synthesized facilely by the condensation reaction of coumarin and hydrazine hydrate, and its structure was characterized by 1H NMR. The recognition properties of the target compound 3 with Cu2+ had been investigated by the fluorescence spectrophotometry. The results showed that the probe 3 exhibited the selective recognition of Cu2+. Upon addition of the concentration of Cu2+ to the solution of compound 3, decreasing fluorescence was observed. The selective and interference of compound 3 were discussed. The fluorescence intensity of compound 3 was no chang when the compound 3 was joined other metal ion (such as Al3+、Ca2+、Co2+、Cr3+、Fe3+、K+、Mg2+、Na+、Ni2+、Zn2+, etc.). The interference was found,when other metal and Cu2+coexist in solution of compound 3. Experiments showed that probe 3 was selective recognition of Cu2+.%设计合成了一种基于新型香豆素水合肼希夫碱荧光探针，结构经1H NMR表征。利用荧光光谱研究了该探针分子对铜离子的识别作用。实验表明，该探针对铜离子具有较好的选择性识别能力，加入铜离子后，该探针的荧光发射强度显著减弱，并且荧光发射强度随着Cu2+浓度的增加而减弱。通过荧光离子滴定实验对其选择性和抗干扰能力进行了系统研究，发现加入其他常见金属离子(如Al3+、Ca2+、Co2+、Cr3+、Fe3+、K+、Mg2+、Na+、Ni2+、Zn2+等)，荧光强度没有发生变化，并且上述各种离子分别与铜离子共存时，对其没有干扰。结果表明，香豆素水合肼希夫碱荧光探针对铜离子具有较高选择性识别。

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