Hu Jing-Han, Sun You, Qi Jing, Li Qiao, Wei Tai-Bao
College of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu 730070, PR China.
College of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu 730070, PR China.
Spectrochim Acta A Mol Biomol Spectrosc. 2017 Mar 15;175:125-133. doi: 10.1016/j.saa.2016.12.009. Epub 2016 Dec 13.
A simple chemosensor YS based on coumarin group was designed and synthesized. Its structure was determined by single crystal X-ray diffraction analysis. In the presence of cyanide the sensor showed an immediate visible change in color from colorless to pale yellow by naked-eyes and produced a strong blue fluorescence rapidly in DMSO/HO (3:7, v/v). The detection limit on fluorescence response of the sensor to CN is down to 1.69×10M. In addition YS could show fluorescence turn-on response rapidly for Zn over other metals ions such as Fe, Hg, Ag, Ca, Cu, Co, Ni, Cd, Pb, Cr and Mg in aqueous solutions. Notably, this sensor served as a molecular switch, which was controlled by Zn and EDTA cyclically. Test strips based on YS were fabricated, which could act as a convenient and efficient CN and Zn test kit. This chemosensor could achieve the detection of two ions, which need not depend on two different sensors.
设计并合成了一种基于香豆素基团的简单化学传感器YS。通过单晶X射线衍射分析确定了其结构。在氰化物存在下，该传感器肉眼可见地立即从无色变为浅黄色，并且在DMSO/H₂O（3:7，v/v）中迅速产生强烈的蓝色荧光。该传感器对CN荧光响应的检测限低至1.69×10⁻⁶M。此外，在水溶液中，YS对Zn能比其他金属离子如Fe、Hg、Ag、Ca、Cu、Co、Ni、Cd、Pb、Cr和Mg更快地显示荧光开启响应。值得注意的是，该传感器用作分子开关，由Zn和EDTA循环控制。制备了基于YS的测试条，其可作为方便高效的CN和Zn检测试剂盒。这种化学传感器无需依赖两种不同的传感器就能实现对两种离子的检测。
