Two highly sensitive Schiff-base fluorescent indicators for the detection of Zn2+

被引：20
|
作者：
Wang, Lina [1 ,2 ,3 ]
Qin, Wenwu [2 ,3 ]
Liu, Weisheng [2 ,3 ]
机构：
[1] Qingdao Univ Sci & Technol, Coll Environm & Safety Engn, Qingdao 266042, Peoples R China
[2] Lanzhou Univ, Coll Chem & Chem Engn, Key Lab Nonferrous Met Chem & Resources Utilizat, Lanzhou 730000, Peoples R China
[3] Lanzhou Univ, Coll Chem & Chem Engn, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China
来源：
ANALYTICAL METHODS | 2014年 / 6卷 / 04期
关键词：
INTRACELLULAR FREE ZINC; SIGNALING MECHANISM; BIOLOGICAL-SYSTEMS; LABILE ZINC; METAL-IONS; SENSORS; PROBE; COMPLEXES; DESIGN; ZN(II);
D O I：
10.1039/c3ay41691g
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Two novel Schiff-based fluorescent probes 1 and 2 for Zn2+ ion were developed. The spectroscopic behavior toward metal ions has been investigated by the absorption and fluorescence method. Both of the two probes were found to show good selectivity to Zn2+ ion over other metal ions in ethanol-water solution, such as Li+, Na+, Mg2+, Al3+, K+, Ca2+, Ba2+, Cr3+, Mn2+, Cu2+, Co2+, Ni2+, Fe3+, Hg2+, Ag+, Cd2+ and Pb2+. The selectivity mechanism of 1 and 2 to metal ions is based on a combinational effect of proton transfer (ESPT), C=N isomerization and chelation-enhanced fluorescence (CHEF). pH response experiments show that the probes can be used to indicate pH values under certain conditions.
引用
收藏
页码：1167 / 1173
页数：7
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