作者:Yuji Mikata、Azusa Yamashita、Keiko Kawata、Hideo Konno、Saori Itami、Keiko Yasuda、Satoshi Tamotsu
DOI:10.1039/c0dt00791a
日期:——
A 6-methoxyquinoline conjugated diethylenetriamine derivative, N,N′′-bis(6-methoxy-2-quinolylmethyl)diethylenetriamine (6-MeOBQDIEN) has been synthesized and its fluorescent response toward zinc ion was investigated. In the presence of zinc ion, 6-MeOBQDIEN exhibits fluorescence (λex = 329 nm, λem = 418 nm, ϕ = 0.039). The fluorescent intensity of the zinc complex of the compound is two times higher than the parent BQDIEN (ϕ = 0.021) under the same conditions. The crystal structure of 6-MeOBQDIEN-Zn complex shows that all five nitrogen atoms participate to the metal coordination in a distorted square-pyramidal geometry (τ = 0.145) with the aliphatic nitrogen in an apical position. Fluorescent microscopic analysis using 6-MeOBQDIEN reveals the zinc ion concentration change in living cells.
我们合成了一种 6-甲氧基喹啉共轭二乙烯三胺衍生物 N,N′′-双(6-甲氧基-2-喹啉甲基)二乙烯三胺(6-MeOBQDIEN),并研究了它对锌离子的荧光反应。在锌离子存在下,6-MeOBQDIEN 发出荧光(λex = 329 nm,λem = 418 nm,j = 0.039)。在相同条件下,该化合物锌络合物的荧光强度是母体 BQDIEN 的两倍(j = 0.021)。6-MeOBQDIEN-Zn 复合物的晶体结构显示,所有五个氮原子都以扭曲的方锥体几何形状(τ = 0.145)参与金属配位,脂肪族氮位于顶端位置。利用 6-MeOBQDIEN 进行的荧光显微分析揭示了活细胞中锌离子浓度的变化。