A new rhodamine-based fluorescent chemosensor for mercury in aqueous media  

作　　者：Yao Liu Er-Bing Yang Rui Han Di Zhang Yong Ye Yu-Fen Zhao 

机构地区：[1]Phosphorus Chemical Engineering Research Center of Henan Province,the College of Chemistry and Molecular Engineering,Zhengzhou University [2]Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education),Department of Chemistry,Tsinghua University [3]Key Lab Chem Biol,Fujian Prov. Coll. Chem.& Chem. Engn.,Xiamen University

出　　处：《Chinese Chemical Letters》2014年第7期1065-1068,共4页中国化学快报（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Nos.20972143,21375113);Program for New Century Excellent Talents in University(No.NCET-11-0950)

摘　　要：A new fluorescent ＂on-off＇ chemosensor for Hg2＋ initiated by a derivative of rhodamine B was designed and synthesized. Compound 1 exhibited high sensitivity and selectivity for Hg2＋ over other commonly coexistent metal ions in aqueous media, Upon the addition of Hg2＋, the spirocyclic ring of probe is opened and a significant enhancement of visible color and fluorescence in the range of 500-600 nm is observed, The colorimetric and fluorescent response to Hg2＋ can be conveniently detected by the naked eye, which provides a facile method for visual detection of Hg2＋, From the molecular structure and spectral results of 1, an irreversible, hydrolysis, desulfurization reaction mechanism is proposed.A new fluorescent ＂on-off＇ chemosensor for Hg2＋ initiated by a derivative of rhodamine B was designed and synthesized. Compound 1 exhibited high sensitivity and selectivity for Hg2＋ over other commonly coexistent metal ions in aqueous media, Upon the addition of Hg2＋, the spirocyclic ring of probe is opened and a significant enhancement of visible color and fluorescence in the range of 500-600 nm is observed, The colorimetric and fluorescent response to Hg2＋ can be conveniently detected by the naked eye, which provides a facile method for visual detection of Hg2＋, From the molecular structure and spectral results of 1, an irreversible, hydrolysis, desulfurization reaction mechanism is proposed.

关 键 词：Fluorescent probe RHODAMINE MERCURY ON-OFF Chemosensor 

分 类 号：O657.3[理学—分析化学] TQ262.3[理学—化学]