作者:K.M.K. Swamy、Min-Jung Kim、Hye-Ryeong Jeon、Ji-Young Jung、Ju-Young Yoon
DOI:10.5012/bkcs.2010.31.12.3611
日期:2010.12.20
Five new 4- or 8-substituted-7-hydroxycoumarin derivatives (1-5) were synthesized as fluorescent sensors for metal ions. Fluorescent changes and selectivity for metal ions were compared based on the introduction of different ligands and/or testing with different substitution positions of 7-hydroxycoumarin in aqueous solution. Especially, probes 2, 3 and 5 displayed large fluorescence enhancements with $Zn^2+}$ and $Cd^2+}$. Probes 2 and 3 showed moderate selectivity for $Zn^2+}$ over $Cd^2+}$. On the other hand, probe 4 showed large fluorescence quenching effects upon the addition of $Ag^+$ and $Hg^2+}$.
合成了五种新的 4-或 8-取代-7-羟基
香豆素衍
生物 (1-5) 作为
金属离子的荧光传感器。基于不同
配体的引入和/或
水溶液中7-羟基
香豆素不同取代位置的测试,比较了荧光变化和对
金属离子的选择性。特别是,探针 2、3 和 5 在
$Zn^2+}$ 和
$Cd^2+}$ 下显示出较大的荧光增强。探针 2 和 3 对
$Zn^2+}$ 的选择性高于
$Cd^2+}$。另一方面,探针4在添加
$Ag^+$和
$Hg^2+}$后表现出较大的荧光猝灭效应。