基于喹啉-香豆素共轭物的用于选择性检测铝离子（Al(3+)）的荧光传感器。
Fluorescent sensor for selective detection of Al(3+) based on quinoline-coumarin conjugate.
作者信息
Qin Jing-can, Li Tian-rong, Wang Bao-dui, Yang Zheng-yin, Fan Long
机构信息
College of Chemistry and Chemical Engineering, State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, PR China.
College of Chemistry and Chemical Engineering, State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, PR China.
出版信息
Spectrochim Acta A Mol Biomol Spectrosc. 2014 Dec 10;133:38-43. doi: 10.1016/j.saa.2014.05.033. Epub 2014 May 28.
A fluorescence probe, 8-formyl-7-hydroxyl-4-methyl coumarin - (2'-methylquinoline-4-formyl) hydrazone (L) has been synthesized. The chemosensor is found preferential binding to Al(3+) in presence of other competitive ions with associated changes in its optical and fluorescence spectra behavior. Upon addition of Al(3+) to a solution of L, it shows 200-fold enhancement of fluorescence intensity which might be attributed to form a 2:1 stoichiometry of the binding mode of LAl(III) and the chelation enhanced fluorescence (CHEF) process at 479nm in ethanol. The lowest detection limit for Al(3+) is determined as 8.2×10(-7)M.
一种荧光探针，8-甲酰基-7-羟基-4-甲基香豆素-(2'-甲基喹啉-4-甲酰基)腙（L）已被合成。发现该化学传感器在存在其他竞争性离子的情况下优先与Al(3+)结合，其光学和荧光光谱行为会发生相关变化。向L的溶液中加入Al(3+)后，荧光强度增强了200倍，这可能归因于在乙醇中形成了LAl(III)结合模式的2:1化学计量比以及螯合增强荧光（CHEF）过程。Al(3+)的最低检测限确定为8.2×10(-7)M。
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