文献类型：期刊文献

英文题名：A per-acetyl glycosyl rhodamine as a novel fluorescent ratiometric probe for mercury (II)

作者：Li, Kai-Bin[1,2];Zhang, Hai-Lin[1,2];Zhu, Bin[1,2];He, Xiao-Peng[1,2];Xie, Juan[3];Chen, Guo-Rong[1,2]

机构：[1]E China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Inst Fine Chem, Shanghai 200237, Peoples R China;[3]CNRS UMR 8531, PPSM, ENS Cachan, F-94235 Cachan, France

年份：2014

卷号：102

起止页码：273

外文期刊名：DYES AND PIGMENTS

收录：;EI(收录号：20134917061090);WOS:【SCI-EXPANDED(收录号:WOS:000331483800035)】；

基金：We thank the National Natural Science Foundation of China (21176076, 21202045) and the Key Project of Shanghai Science and Technology Commission (13NM1400900).

语种：英文

外文关键词：Rhodamine; Sugar; Click chemistry; Mercury; Ratiometric; Fluorescent

摘要：This paper describes the identification of a per-acetyl glycosyl rhodamine B (RB) derivative, KB2, simply prepared by a click reaction, as a novel fluorescent ratiometric probe for mercury (II). In an 80% aqueous solution, KB2 responded to Hg2+ in a ratiometric manner with a good selectivity over a range of metal cations. Upon formation of a 1:1 probe-ion complex, the blue fluorescence of the per-acetyl glycosyl moiety of KB2 is quenched, along with the emergence of a bright red fluorescence attributable to the lactam ring-opening form of RB. This is probably caused by a fluorescence resonance energy transfer from the acetyl glycoside as a donor to the acceptor RB-Hg2+ motif. This study provides unique insight into the design of ratiometric chemoprobes for heavy metals based on the simple coupling of per-acetyl glycosides with fluorogenic dyes. (C) 2013 Elsevier Ltd. All rights reserved.