A Metal-Macrocycle Complex as a Fluorescent Sensor for Biological Phosphate Ions in Aqueous Solution
作者:Xiao-huan Huang、Yan Lu、Yong-bing He、Zhi-hong Chen
DOI:10.1002/ejoc.200901328
日期:2010.4
both of which exhibited high selectivity for the Zn II ion in switching-on-type responses in aqueous solution. For ligand 1, Zn II is coordinated by four nitrogen atoms of the macrocycle and two amino groups on the pendent arms, which results in proximity between the two fluorophores. So, 1-Zn II shows obvious excimer emission in aqueous solution. When PPi or ATP was added (pH 7.4), the excimer emission
我们合成了带有两个蒽基作为侧臂的四氮杂大环 1 和 2,它们在水溶液中的开启型响应中都对 Zn II 离子表现出高选择性。对于配体 1,Zn II 由大环的四个氮原子和悬臂上的两个氨基配位,这导致两个荧光团之间的接近。因此,1-Zn II 在水溶液中显示出明显的准分子发射。当加入 PPi 或 ATP 时(pH 7.4),1-Zn II 的准分子发射被淬灭,而单体发射恢复。据我们所知,没有其他已知的传感器在生理 pH 条件下具有这种特性。同时,