A highly selective fluorescent sensor for Hg(II) based on an NTe2 chelating motif and its application to living cell imaging

被引：13
|
作者：
Kao, Shao-Lun [1 ]
Venkatesan, Parthiban [1 ]
Wu, Shu-Pao [1 ]
机构：
[1] Natl Chiao Tung Univ, Dept Appl Chem, Hsinchu 300, Taiwan
来源：
NEW JOURNAL OF CHEMISTRY | 2015年 / 39卷 / 05期
关键词：
HG2+; MERCURY; CHEMOSENSOR; IONS; METHYLMERCURY;
D O I：
10.1039/c5nj00159e
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A fluorescent probe (NBDTe) based on an NTe2 chelating motif has been developed for the highly selective and sensitive detection of Hg2+. Significant fluorescence enhancement was observed with the chemosensor NBDTe in the presence of Hg2+. Moreover, the metal ions Ag+, Al3+, Ca2+, Cd2+, Co2+, Cu2+, Cr3+, Fe2+, Fe3+, Hg2+, Mg2+, Mn2+, Ni2+, Pb2+, and Zn2+ produced only minor changes in the fluorescence values of the system. The association constant (K-a) of Hg2+ binding to the chemosensor NBDTe was found to be 3.81 x 10(3) M (1), with a detection limit of 4.2 mu M. The maximum fluorescence enhancement caused by Hg2+ binding to the chemosensor NBDTe was observed over the pH range of 4.0-10.0. In addition, fluorescence microscopy experiments showed that the chemosensor NBDTe can be used as a fluorescent probe for detecting Hg2+ in living cells.
引用
收藏
页码：3551 / 3557
页数：7
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