一种对铜离子进行裸眼识别的新型萘酐化学传感器的合成及性质研究

The synthesis and properties of a new chemosensor for detecting copper(Ⅱ)ion by naked-eye based on naphthalimide

设计、合成一种新型萘酰亚胺与香豆素偶联的铜离子化学传感器1.通过1H NMR,13C NMR,IR,ESI-MS等表征该物质的化学结构,通过UV-vis吸收光谱研究该分子的光谱性质.结果表明:该分子在DMSO-H2O(体积分数为1∶1)溶液中加入铜离子,传感器分子通过与铜离子络合导致溶液颜色从黄色变成橙黄色.不仅最大吸收波长有较明显地红移且其吸收强度也增强,而加入其他离子(Al3+、Ca2+、Cd2+、Ba2+、Hg2+、Sr2+、K+、Mn2+、Co2+、Ni2+、Ag+、Mg2+、Li+、Pb2+、Zn2+)均没有明显变化,该传感器具有专一性好、灵敏度高、检测迅速且铜离子而不受其他离子的干扰.

Designed and synthesized a new copper ion chemosensor 1 based on naphthalimide andcoumarin. The chemical structure of sensor 1 was investigated by1 H NMR,13 C NMR,IR,ESI-MS,thespectral properties of the molecule were studied by UV-vis,which showed that the solution color changedfrom yellow to orange due to sensor 1 with copper ion complexion when the copper ion was added to thesolution of sensor 1 in DMSO-H2O（V/V=1∶1）. The maximum absorption wavelength not only had the obviousred shift but also had an enhancement,however,when the other ions were added,such as Al3＋、Ca2＋、Cd2＋、Ba2＋、Hg2＋、Sr2＋、K＋、Mn2＋、Co2＋、Ni2＋、Ag＋、Mg2＋、Li＋、Pb2＋、Zn2＋,the maximum absorption wavelength did not show anychange. These results revealed that the sensor 1 had high specificity,sensitivity,fast detection for copper ionand there was almost no interference from other metal ions.