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An efficient water-soluble fluorescent chemosensor based on furan Schiff base functionalized PEG for the sensitive detection of Al3+ in pure aqueous solution

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Abstract

Furan Schiff base functionalized PEG (PEGFB) was synthesized as an excellent reversible fluorescent chemosensor for the sensitive detection of Al3+ in 100% aqueous solution. The non-fluorescent PEGFB displayed high selectivity towards Al3+ over other coexistent metal ions, accompanied by a visual fluorescence change from colorless to bright cyan. The detection limit of PEGFB towards Al3+ was determined to be 7.90 × 10−9 M. PEGFB could be utilized to detect Al3+ in a relatively wide pH range from 5 to 9. The reversible fluorescence response of PEGFB upon the addition of Al3+ and EDTA was successfully used to construct an INHIBIT molecular logic gate. Furthermore, test strips coated with PEGFB could be applied for the convenient and visual sensing of Al3+ in real water samples.

Graphical abstract: An efficient water-soluble fluorescent chemosensor based on furan Schiff base functionalized PEG for the sensitive detection of Al3+ in pure aqueous solution

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Supplementary files

Article information


Submitted
14 Apr 2020
Accepted
05 Jun 2020
First published
05 Jun 2020

New J. Chem., 2020, Advance Article
Article type
Paper

An efficient water-soluble fluorescent chemosensor based on furan Schiff base functionalized PEG for the sensitive detection of Al3+ in pure aqueous solution

L. Bai, Y. Xu, L. Li, F. Tao, S. Wang, L. Wang and G. Li, New J. Chem., 2020, Advance Article , DOI: 10.1039/D0NJ01856B

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