A coumarin-derived fluorescence chemosensors selective for copper(II)
A coumarin-derived fluorescence chemosensors selective for copper(II)
复制标题
香豆素衍生的铜 (II) 选择性荧光化学传感器
DOI：
10.1080/00032710802237673
复制
发表时间：
2008-01-01
影响因子：
2
通讯作者：
Wei, Fu-Hong
中科院分区：
文献类型：
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作者：
Sheng, Jiang Run;Feng, Feng;Wei, Fu-Hong
两种不同的香豆素衍生物通过胺键连接以获得新的荧光信号系统。设计含有C=N基团的香豆素衍生物(L)作为示例进行说明。由于激发态下C=N双键的异构化，游离配体L几乎不发出荧光。然而，在存在 Cu(II) 离子的情况下，这种异构化会因与金属离子结合而停止，从而产生高强度（400 倍）发射。通过这种方式，我们设计了一种用于铜选择性和比率化学传感器的新化合物。
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.