A coumarin-derived fluorescence chemosensors selective for copper(II)

被引:46
作者
Sheng, Jiang Run [1 ]
Feng, Feng [1 ,2 ]
Qiang, You [1 ]
Liang, Fu Guo [1 ]
Sen, Lin [1 ]
Wei, Fu-Hong [3 ]
机构
[1] Nanchang Univ, Dept Chem, Nanchang 330047, Peoples R China
[2] Shanxi Datong Univ, Sch Chem, Datong, Peoples R China
[3] Jiangxi Normal Univ, Dept Chem, Nanchang, Peoples R China
关键词
coumarin; fluorescence sensors; imine;
D O I
10.1080/00032710802237673
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
Two different coumarin derivatives have been connected via animine linkage to obtain a new fluorescence signaling system. The coumarin derivative (L) containing a C=N group was designed as an example for illustration. The free ligand L is almost nonfluorescent due to the isomerization of C=N double bond in the excited state. However, in the presence of a Cu(II) ion, this isomerization is stopped because of bonding to the metal ion, resulting in a high-intensity (400-fold) emission. In this way, we designed a new compound for copper-selective and ratiometric chemosensors.
引用
收藏
页码:2203 / 2213
页数:11
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