Fluorescence turn on of coumarin derivatives by metal cations: A new signaling mechanism based on C=N isomerization

被引：578

作者：

Wu, Jia-Sheng ^{[1
]}

Liu, Wei-Min

Zhuang, Xiao-Qing

Wang, Fang

Wang, Peng-Fei

Tao, Si-Lu

Zhang, Xiao-Hong

Wu, Shi-Kang

Lee, Shuit-Tong

机构：

[1] Chinese Acad Sci, Lab Organ Optoelect Funct Mat & Mol Engn, Nanoorgan Photoelect Lab, Beijing 100080, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100080, Peoples R China

[3] City Univ Hong Kong, Ctr Super Diamond & Adv Films, Hong Kong, Hong Kong, Peoples R China

[4] City Univ Hong Kong, Dept Phys & Mat Sci, Hong Kong, Hong Kong, Peoples R China

来源：

ORGANIC LETTERS | 2007年 / 9卷 / 01期

关键词：

D O I：

10.1021/ol062518z

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

A new sensing mechanism based on C = N isomerization, which shows a very significant fluorescence enhancement to the metal cations in a simple and efficient way, is demonstrated. A 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 CN double bond in the excited state. However, the solution of ligand shows about a 200-fold increase of fluorescence quantum yield (about 30%) upon addition of Zn(ClO4)(2).

引用

页码：33 / 36

页数：4

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