Colorimetric and Highly Selective Fluorescence ＂Turn-on＂ De-tection of Cr^3＋ by Using a Simple Schiff Base Sensor  

作　　者：Yunxu Yang Huimin Xue Laicheng Chen Ruilong Sheng Xuqin Li Kun Li 

机构地区：[1]Department of Chemistry and Chemical Engineering, University of Science and Technology of Beij'ing, Beijing 100083, China [2]Petrochemical Department, Puyang Vocational Technology College, Puyang, Henan 457000, China [3]Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China

出　　处：《Chinese Journal of Chemistry》2013年第3期377-380,共4页中国化学（英文版）

基　　金：We thank the metallurgical research foundation in University of Science and Technology of Beijing; the National Natural Science Foundation of China （No. 20972015） and the Natural Science Foundation of Bei-jing （No. 2112026） for financial support.

摘　　要：A simple 8-quinolinecarboxaldehyde derived antipyrine Schiff base （QA） was synthesized and characterized, which exhibited high selectivity to Cr^3＋ over other metal cations. The Cr^3＋ recognition of QA could be achieved by means of fluorescense and absorption spectra, moreover, the obvious color change from colorless to yellowish is easily observed by naked-eyes. The binding constant of QA to Cr^3＋ was evaluated by spectral titration and the binding model was in 1 ： 1 stoichiometry measured by Job＇s plot.A simple 8-quinolinecarboxaldehyde derived antipyrine Schiff base （QA） was synthesized and characterized, which exhibited high selectivity to Cr^3＋ over other metal cations. The Cr^3＋ recognition of QA could be achieved by means of fluorescense and absorption spectra, moreover, the obvious color change from colorless to yellowish is easily observed by naked-eyes. The binding constant of QA to Cr^3＋ was evaluated by spectral titration and the binding model was in 1 ： 1 stoichiometry measured by Job＇s plot.

关 键 词：fluorescent chemosensor 8-quinolinecarboxaldehyde Schiffbase Cr^3＋ detection 

分 类 号：O625.632[理学—有机化学] X832.02[理学—化学]