Selective FL Quenching or Enhancing of Diimine Ligands by Guanine
Selective FL Quenching or Enhancing of Diimine Ligands by Guanine
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DOI：
10.1007/s10895-013-1216-8
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发表时间：
2013-09-01
影响因子：
2.7
通讯作者：
Kai，Masaaki
中科院分区：
文献类型：
--
作者：
Smanmoo，Srung;Kawasaki，Shinya;Kai，Masaaki
二亚胺配体（DL）1在与鸟嘌呤结合时表现出显著的荧光猝灭。在鸟嘌呤的存在下，苯环的对位取代基从羟基改变为溴基，从而增强了荧光。荧光选择性的相反表明苯环对位取代基的深刻影响。DL 1和DL 2的合成方法简单，对鸟嘌呤具有良好的选择性，这两种DL有望成为其他鸟嘌呤衍生物的化学传感器。
Diimine ligand (DL) 1 significantly exhibited the fluorescence quenching upon binding to guanine. Changing at the para-substituent of the phenyl ring from the hydroxyl to bromo groups reversely enhanced the fluorescence in the presence of guanine. The reverse in the fluorescence selectivity indicated the profound effect of the substituent at the para-position of the phenyl ring. The simple synthesis of DL 1 and DL 2 with good selectivity for guanine offers these DLs as promising compounds for chemosensors of other guanine derivatives.