文献类型：期刊文献

英文题名：One-pot synthesis of a natural phenol derived fluorescence sensor for Cu(II) and Hg(II) detection

作者：Zhang, Xiulan[1];Guo, Xuhong[1,2];Yuan, Huihui[3];Jia, Xin[1];Dai, Bin[1]

机构：[1]Shihezi Univ, Engn Res Ctr Mat Oriented Chem Engn Xinjiang Bing, Key Lab Mat Oriented Chem Engn Xinjiang Uygur Aut, Sch Chem & Chem Engn,Key Lab Green Proc Chem Engn, Shihezi 832003, Peoples R China;[2]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai Key Lab Funct Mat Chem, Shanghai 200237, Peoples R China

年份：2018

卷号：155

起止页码：100

外文期刊名：DYES AND PIGMENTS

收录：;EI(收录号：20181304938972);WOS:【SCI-EXPANDED(收录号:WOS:000433650300014)】；

基金：This work was supported by Natural Science Foundation of China (21364010, 51663021), Bingtuan Excellent Young Scholars (CZ027205), the Bingtuan Innovation Team in Key Areas (2015BD003) and Yangtze River scholar research project of Shihezi University (No. CJXZ201401).

语种：英文

外文关键词：Catechine; Dopamine; Fluorescence; Copper ions; Mercury ions

摘要：Development of a high performance molecular fluorescence sensor from natural products for metal ions selective detection is also a great challenge. Herein, catechine-dopamine (C-DA) as a fluorescence sensor, was designed for Cu(II) and Hg(II) selective detection in 100% aqueous solution. C-DA with high fluorescence quantum yield of 10.93% was rapidly synthesized from the reaction between two natural phenols, catechine and dopamine, by a simple one-pot organic solvent free approach. Based on fluorescence "on-off", C-DA could linearly detect the Cu(II) and Hg(II) concentrations in a range of 75 nM - 10 mu M and 0.25 mu M - 8 mu M, respectively, and realized the Cu(II) and Hg(II) determination in tap water samples. Moreover, C-DA exhibited strong affinity to Cu(II) and Hg(II) among 15 kinds of metal ions and 9 kinds of anions. The association constants of C-DA-Cu(II) and C-DA-Hg(II) were respectively calculated as 3.21X10(4) M-1 and 3.05X10(4) M-1. Interestingly, although both Cu(II) and Hg(II) formed 1:1 complex to C-DA, they bond to C-DA in a different manner. Cu(II) firstly oxidized the catechol hydroxyl to quinone and was reduced to Cu(I), and then Cu(I) chelated with quinone. Nevertheless, Hg(II) straightly bonded to catechol hydroxyl.