Design of a semirigid molecule as a selective fluorescent chemosensor for recognition of Cd(II).
Design of a semirigid molecule as a selective fluorescent chemosensor for recognition of Cd(II).
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DOI：
10.1021/ol801382f
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发表时间：
2008-07
期刊：
影响因子：
5.2
通讯作者：
Xiao-liang Tang;Xiaohong Peng;W. Dou;J. Mao;Jiangrong Zheng;W. Qin;Weisheng Liu;Jin Chang;
中科院分区：
文献类型：
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作者：
Xiao-liang Tang;Xiaohong Peng;W. Dou;J. Mao;Jiangrong Zheng;W. Qin;Weisheng Liu;Jin Chang;
设计了一种新型的具有半刚性结构的8-羟基喹啉化学传感器，并研究了其对金属离子的荧光传感行为。在甲醇水溶液中，只有Cd（2+）的荧光增强效应显著。结果清楚地表明，特定的半刚性结构可以根据离子半径选择性地容纳Cd（2+），这将有效地抑制分子内从n π * 态的无辐射跃迁，以增强荧光响应。
A new 8-hydroxyquinoline-based chemosensor possessing a semirigid structure was designed, and its fluorescent sensing behavior toward metalions was investigated. A prominent fluorescence enhancement only for Cd(2+) was found in aqueous methanol solution. The results clearly suggest that the specific semirigid structure could selectively accommodate Cd(2+) according to ionic radius, which would effectively suppress the intramolecular radiationless transitions from the n pi* state to enhance the fluorescence response.