Colorimetric chemosensor and test kit for detection copper(II) cations in aqueous solution with specific selectivity and high sensitivity
作者:Qi Lin、Pei Chen、Juan Liu、Yong-Peng Fu、You-Ming Zhang、Tai-Bao Wei
DOI:10.1016/j.dyepig.2013.01.024
日期:2013.7
specific colorimetric detection of Cu2+ in the context of interference from coexisting metal ions in aqueous solution is a challenge. Therefore, a series of Cu2+ colorimetric chemosensors CS1∼CS3, bearing acylthiosemicarbazide moiety as binding site and nitrophenyl moiety as signal group, were designed and synthesized. Among these sensors, CS3 showed excellent colorimetric specific selectivity and high
在水溶液中共存金属离子的干扰下,Cu 2+的比色检测是一项挑战。因此,一系列的Cu 2+的比色化学传感器CS1〜CS3,轴承acylthiosemicarbazide部分作为结合位点和硝基苯基部分作为信号群,设计并合成。在这些传感器中,CS3对DMSO / H 2 O二元溶液中的Cu 2+具有出色的比色比选择性和高灵敏度。当将Cu 2+添加到CS3溶液中时,观察到从棕色到绿色的显着颜色变化,而阳离子Fe 3+,Hg 2 +,Ag +,Ca 2 +,Zn 2 +,Pb 2 +,Cd 2 +,Ni 2 +,Co 2 +,Cr 3+和Mg 2+不会干扰Cu 2+的识别过程。使用可见光颜色变化和UV-vis变化,检测限分别为5.0×10 -6和1.0×10 -7 M的Cu 2+。制作了基于CS3的测试条,可作为便捷高效的Cu 2+测试套件。