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A heterometallic sodium(I)–europium(III)-organic layer exhibiting dual-responsive luminescent sensing for nitrofuran antibiotics, Cr2O72− and MnO4 anions

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Abstract

The detection of nitrofuran antibiotics and toxic inorganic anions is currently necessary and challenging because their abuse and/or residuals have caused severe environmental pollution and illness. A heterometallic two-dimensional (2D) layered complex, {[Eu2Na(Hpddb)(pddb)2(CH3COO)2]·2.5(DMA)}n (1), was solvothermally synthesized and structurally and photophysically characterized. Pairs of acetate aggregated {Eu2Na(CH3COO)2} chains are periodically interconnected by V-shaped 4,4′-(pyridine-2,6-diyl)dibenzolate (pddb) linkers. More interestingly, the layered complex exhibits a bright red emission and can efficiently discriminate nitrofuran antibiotics by luminescent quenching with a strong quenching constant (Ksv) and low detection limit (LOD) of 4.93 × 104 M−1 and 0.64 μM for nitrofurazone, 4.42 × 104 M−1 and 0.68 μM for nitrofurantoin as well as 2.13 × 104 M−1 and 1.06 μM for furazolidone. Additionally, 1 can also probe trace amounts of toxic Cr2O72− and MnO4 anions with Ksv = 6.45 × 103 M−1 and LOD = 5.35 μM for Cr2O72− and Ksv = 2.84 × 103 M−1 and LOD = 5.99 μM for MnO4 anions. These interesting results indicate that heteromatallic coordination polymers can serve as favorable dual- or even multiple-responsive luminescence sensors to selectively recognize different kinds of contaminants.

Graphical abstract: A heterometallic sodium(i)–europium(iii)-organic layer exhibiting dual-responsive luminescent sensing for nitrofuran antibiotics, Cr2O72− and MnO4− anions

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Publication details

The article was received on 21 Oct 2018, accepted on 02 Jan 2019 and first published on 02 Jan 2019


Article type: Paper
DOI: 10.1039/C8DT04208J
Citation: Dalton Trans., 2019, Advance Article
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    A heterometallic sodium(I)–europium(III)-organic layer exhibiting dual-responsive luminescent sensing for nitrofuran antibiotics, Cr2O72− and MnO4 anions

    S. Xu, J. Shi, B. Ding, Z. Liu, X. Wang, X. Zhao and E. Yang, Dalton Trans., 2019, Advance Article , DOI: 10.1039/C8DT04208J

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