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A simple quinoline-based fluorescent "turn on'' probe with high selectivity for Ag+ in aqueous media
被引:23
|作者:
Chen, Chang-Juan
[1
]
Zhang, Ai-Jiang
[1
]
Hu, Jiang-Bo
[1
]
Miao, Yu-Hang
[1
]
Liu, Xiang
[2
]
机构:
[1] Huanghuai Univ, Dept Chem & Chem Engn, Zhumadian 463000, Peoples R China
[2] Lanzhou Univ, Coll Chem & Chem Engn, Lanzhou 730000, Peoples R China
基金:
中国国家自然科学基金;
关键词:
Fluorescent probe;
Turn on;
Quinoline;
Silver ion;
Crystal structure;
ZINC SENSOR;
METAL-IONS;
SILVER;
CHEMOSENSOR;
WATER;
8-HYDROXYQUINOLINE;
DESIGN;
HG2+;
ELECTRODE;
PYRENE;
D O I:
10.1016/j.ica.2015.06.014
中图分类号:
O61 [无机化学];
学科分类号:
070301 ;
081704 ;
摘要:
A simple quinoline-based fluorescent probe L for Ag+ has been developed. Probe L shows fluorescence enhancement (turn on) response towards Ag+ with high selectivity in aqueous media (methanol-water, v/v = 3: 7, pH 7.2, 20 mM Tris-HCl) based on a combinational effect of the inhibition of intermolecular photoinduced proton transfer and chelation-enhanced fluorescence. And an obvious fluorescent color change could be observed by naked eyes under the light of 365 nm. The binding mode between L and Ag+ has been found to be 1: 1 based on the fluorescence/absorption titration, ESI-MS and further confirmed by X-ray crystallography. (C) 2015 Elsevier B.V. All rights reserved.
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页码:137 / 141
页数:5
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