A highly selective and sensitive sugar–rhodamine “turn-on” fluorescent sensor for divalent copper ion detection in acetonitrile

A “turn-on” sugar–rhodamine fluorescent probe for Cu2+ detection in CH3CN has been designed and synthesized according to a Cu2+ triggered spirolactam ring-opening reaction. The introduction of sugar into probe molecule, combining with solvent effect, significantly improved its selectivity and sensit...

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Bibliographic Details
Published in:Sensors and actuators. B, Chemical Chemical, 2013-02, Vol.177, p.213-217
Main Authors: Yin, Junxia, Ma, Xing, Wei, Guohua, Wei, Dongbin, Du, Yuguo
Format: Article
Language:English
Subjects:
acetonitrile
Chemosensor
copper
Copper ion
detection limit
drinking water
fluorescence
ions
Rhodamine
solvents
Sugar
sugars
World Health Organization
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Summary:A “turn-on” sugar–rhodamine fluorescent probe for Cu2+ detection in CH3CN has been designed and synthesized according to a Cu2+ triggered spirolactam ring-opening reaction. The introduction of sugar into probe molecule, combining with solvent effect, significantly improved its selectivity and sensitivity. The synthesized probe exhibits high Cu2+ selectivity and excellent sensitivity (limit of detection is ca. 10μg/L) in acetonitrile media. The limit of detection is about 200 times lower than the World Health Organization (WHO) recommended level (2.0mg/L) for Cu2+ ions in drinking water.
ISSN:0925-4005
1873-3077
DOI:10.1016/j.snb.2012.10.123