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3D water-stable europium metal organic frameworks as a multi-responsive luminescent sensor for high-efficiency detection of Cr2O72-, MnO4-, Cr3+ ions and SDBS in aqueous solution

Abstract

A microporous europium metal-organic frameworks (Eu-MOFs) with asymmetric trinuclear metal clusters extended by 4,4’-(4,4’-Bipyridine-2,6-diyl) dibenzoic acid, {[Eu3(bpydb)3(HCOO)(OH)2(DMF)]•3DMF•2H2O}n (1) has been synthesized via solvothermal method. The PXRD of 1 confirms that it possesses excellent water stability and pH stability. The photo-luminescence properties of 1 exhibit effective recognition of Cr2O72-, MnO4-, Cr3+ ions and SDBS. Furthermore, a widely liner range, high quenching constant and a low detection limit reveal that 1 can potentially act as luminescence-based sensor for quantitative and highly sensitive detection of Cr2O72-, MnO4-, Cr3+ ions and SDBS in aqueous solution. To the best of our knowledge, the detection limit of 1 is the lowest in reported Ln-MOF-based luminescent sensor to detect Cr2O72- ions (0.5 uM) in aqueous solutions. It is rare that rare earth fluorescent probe for detecting MnO4- ion. It is the first that Ln-MOF, as a fluorescence probe, is used for detecting SDBS. Moreover, fluorescent-based test papers of 1 also has been prepared, which can be helpful to develop a visual detecting for Cr2O72-, MnO4-, Cr3+ ions and SDBS in daily applications.

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Publication details

The article was received on 30 Sep 2018, accepted on 06 Nov 2018 and first published on 07 Nov 2018


Article type: Paper
DOI: 10.1039/C8NJ04956D
Citation: New J. Chem., 2018, Accepted Manuscript
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    3D water-stable europium metal organic frameworks as a multi-responsive luminescent sensor for high-efficiency detection of Cr2O72-, MnO4-, Cr3+ ions and SDBS in aqueous solution

    S. Yang, Y. Yuan, P. Sun, T. Lin, C. zhang and Q. Wang, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C8NJ04956D

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