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A turn-off fluorescent probe for the detection of Cu2+ based on a tetraphenylethylene-functionalized salicylaldehyde Schiff-base

xie, hai fang; Yu, Chang-Jin; huang, ya li; Xu, Hong; Zhang, Qilong; Sun, Xiao-Hong; Feng, Xing; Redshaw, Carl

Authors

hai fang xie

Chang-Jin Yu

ya li huang

Hong Xu

Qilong Zhang

Xiao-Hong Sun

Xing Feng

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Professor Carl Redshaw C.Redshaw@hull.ac.uk
Professor of Inorganic Materials Chemistry and REF Lead for Chemistry



Abstract

A non-planar tetraphenylethylene-functionalized salicylaldehyde Schiff-base fluorescent probe (TPE-An-Py) with aggregation-induced enhanced emission (AIEE) characteristics was synthesized via a classical Knoevenagel condensation reaction, and exhibited a high sensitivity towards copper ions in aqueous media with a “turn-off” fluorescence mechanism; the limit of detection is 2.36×10-7 molL-1. Importantly, the coordination mode of the probe towards copper was further evaluated by UV-vis and NMR spectroscopy and a 1:2 stoichiometry was identified. A single crystal X-ray diffraction study confirmed the binding mode. In addition, the AIEE fluorescent probe can be applied to the detection of Cu2+ in practical samples with satisfactory recoveries in range of 106%~111% in lake water and 97%~108% in tap water.

Journal Article Type Article
Publication Date Mar 26, 2020
Journal Materials Chemistry Frontiers
Print ISSN 2052-1537
Publisher Royal Society of Chemistry
Peer Reviewed Peer Reviewed
APA6 Citation xie, H. F., Yu, C., huang, Y. L., Xu, H., Zhang, Q., Sun, X., …Redshaw, C. (2020). A turn-off fluorescent probe for the detection of Cu2+ based on a tetraphenylethylene-functionalized salicylaldehyde Schiff-base. Materials Chemistry Frontiers, https://doi.org/10.1039/c9qm00759h
DOI https://doi.org/10.1039/c9qm00759h
Publisher URL https://pubs.rsc.org/en/Content/ArticleLanding/2020/QM/C9QM00759H#!divAbstract
Additional Information : This document is Similarity Check deposited; : Supplementary Information; : Single-blind; : Received 13 December 2019; Accepted 25 March 2020; Accepted Manuscript published 26 March 2020
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