文献类型：期刊文献

英文题名：A thioether-rich crown-based highly selective fluorescent sensor for Hg²⁺ and Ag⁺ in aqueous solution

作者：Chen, Tao[1];Zhu, Weiping[1];Xu, Yufang[1];Zhang, Shenyi[1];Zhang, Xiaojun[1];Qian, Xuhong[1]

机构：[1]E China Univ Sci & Technol, Sch Pharm, Shanghai Key Lab Chem Biol, Shanghai 200237, Peoples R China

年份：2010

卷号：39

期号：5

起止页码：1316

外文期刊名：DALTON TRANSACTIONS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000273956200025)】；

基金：We are grateful for the financial support from National Natural Science Foundation of China (Grants 20536010, 20746003, 90713026), Science and Technology Foundation of Shanghai (Grants 06JC14021, 073919109), Program of Shanghai Subject Chief Scientist (Grant 07XD14009), and Shanghai Leading Academic Discipline Project (B507).

语种：英文

摘要：A new fluorescent sensor 1, based on the naphthalimide chromophore and thioether-rich crown receptor, exhibited dual signaling behaviors for Hg2+ and Ag+ in aqueous solution. Upon addition of Hg2+, the fluorescence intensity enhanced in a linear fashion with a quantum yield increase of about 5-fold. Moreover, with the 1-Hg2+ complex, Ag+ was easily recognized by a marked fluorescence quenching. The living cells image experiments demonstrate the value of sensor 1 in fluorescent visualization of Hg2+ ions in biological systems.