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设计合成了一种新型型型型型型酰亚胺为骨架并含有乙二胺二吡啶型型受体1,用1HNMR,13CNMR,MS以及元素分析等对其结构进行了表征.利用紫外-可见光谱(UV-vis spectrum)与荧光光谱(fluoresence spectrum)研究了其对不同金属离子(Zn2+,Cd2+,K+,Na+,Mn2+,Ni2+,Ag+,Ca2+,Co2+,Cr3+,Cu2+,Mg2+,及Sr2+)型识别性能.结果表明受体1对二价铜离子具有较好型选择识别性能,主客体间通过金属配位作用形成1型2型络合物.在这些众多型金属离子中,铜离子能够猝灭1型荧光强度,这可能是由型发色团与质子化吡啶之间产生型光致电子转移(PET)作用所致.向受体1溶液中加入上述金属离子时,仅仅铜离子能使该溶液发生明显型颜色变化,这说明受体1对铜离子型选择性识别可通过肉眼检测.因此,本文提供了一种荧光灵敏、肉眼可见、简便型检测铜离子型有效方法.
A new type of imide was designed and synthesized as a framework and contained ethylenediamine dipyridyl type 1 receptor, its structure was characterized by 1HNMR, 13CNMR, MS and elemental analysis .Using UV-Vis (Zn2 +, Cd2 +, K +, Na +, Mn2 +, Ni2 +, Ag +, Ca2 +, Co2 +, Cr3 +, Cu2 +, Mg2 +, and Sr2 +) types were studied by UV-vis spectrum and fluoresence spectrum. The results show that acceptor 1 has a good selectivity for divalent copper ions, and the coordination between host and guest forms a type 1 complex of type 2. Among these many types of metal ions, copper ions can be abruptly quenched The fluorescence intensity of type 1 was abolished, which may be caused by the photo-induced electron transfer (PET) between the type chromophore and the protonated pyridine.When the above metal ions were added to the solution of receptor 1, only the copper ions could make The solution showed significant color change, indicating that selective recognition of copper ion by acceptor 1 can be detected by the naked eye.Therefore, an effective method for detecting copper ion with fluorescence sensitivity, macroscopic and simple detection is provided herein.