Tetrahedron Letters ( IF 1.8 ) Pub Date : 2018-09-18 , DOI: 10.1016/j.tetlet.2018.09.042 Yang Liu , Liqiu Wang , Chenxiao Guo , Yajuan Hou
A colorimetric probe N,N’-bis(2-methoxy-ethyl)-2,3,3-trimethyl-3H-squaraine (MOESQ) with H2O solubility was synthesized to detect Cu2+. MOESQ exhibits good selectivity, high sensitivity and fast UV-Vis response toward Cu2+ over other competing ions in CH3CN. The detection limit of MOESQ for Cu2+ in CH3CN can reach 1.88 × 10−7 molL−1. By adsorbing MOESQ on the chromatography paper, a colorimetric test paper for Cu2+ was prepared, which could detect Cu2+ with the color change from blue to faint yellow even in the limit of detection concentration of 10−6 molL−1.
中文翻译:
一种基于比色方酸的探针和试纸,用于肉眼快速检测铜离子(II)
合成了具有H 2 O溶解度的比色探针N,N'-双(2-甲氧基-乙基)-2,3,3-三甲基-3H-方酸(MOESQ),以检测Cu 2+。与CH 3 CN中的其他竞争离子相比,MOESQ对Cu 2+表现出良好的选择性,高灵敏度和快速的UV-Vis响应。CH 3 CN中Cu 2+的MOESQ的检出限可以达到1.88×10 -7 molL -1。通过将MOESQ吸附在色谱纸上,制备了Cu 2+的比色试纸,可以检测Cu 2+即使在10 -6 molL -1的检测浓度范围内,颜色也会从蓝色变为淡黄色。