Fluorescent sensor for selective detection of Al3+ based on quinoline-coumarin conjugate

被引：77
作者：
Qin, Jing-can [1 ]
Li, Tian-rong [1 ]
Wang, Bao-dui [1 ]
Yang, Zheng-yin [1 ]
Fan, Long [1 ]
机构：
[1] Lanzhou Univ, Coll Chem & Chem Engn, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China
来源：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2014年 / 133卷
基金：
中国国家自然科学基金;
关键词：
Coumarin; Fluorescence sensor; Aluminum ion; CHEF; ALUMINUM IONS; AQUEOUS-MEDIA; ON NAPHTHOL; CHEMOSENSOR; SCAFFOLD; PROBE; TIME;
D O I：
10.1016/j.saa.2014.05.033
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
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 Al3+ in presence of other competitive ions with associated changes in its optical and fluorescence spectra behavior. Upon addition of Al3+ 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 L-Al(III) and the chelation enhanced fluorescence (CHEF) process at 479 nm in ethanol. The lowest detection limit for Al3+ is determined as 8.2 x 10(-7) M. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：38 / 43
页数：6
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