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Water-stable Eu-MOF fluorescent sensors for trivalent metal ions and nitrobenzene

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Abstract

Two novel Eu metal–organic frameworks (MOFs), namely {[Eu2(pdba)3(H2O)3]·2H2O}n (1) and {[Eu3(pdba)4(H2O)4]·5H2O}n (2), were prepared with 4′-(1H-pyrazol-3-yl)-[1,1′-biphenyl]-3,5-dicarboxylic acid (H2pdba) under hydrothermal conditions. MOF 1 exhibits a 3D supramolecular structure assembled from the π⋯π interactions between the benzene rings of the ligands, whereas 2 comprises a 3D structure through coordination connection between nitrogen atom and Eu3+. It is worth noting that the two MOFs showed good luminescence performance and high-sensitivity fluorescence quenching behavior toward Fe3+ (Cr3+) and nitrobenzene. Furthermore, the experimental results for stability in water and cycle test show that these two MOFs can be used as potential fluorescent probes.

Graphical abstract: Water-stable Eu-MOF fluorescent sensors for trivalent metal ions and nitrobenzene

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Publication details

The article was received on 17 Jul 2017, accepted on 19 Aug 2017 and first published on 21 Aug 2017


Article type: Paper
DOI: 10.1039/C7DT02590D
Citation: Dalton Trans., 2017, Advance Article
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    Water-stable Eu-MOF fluorescent sensors for trivalent metal ions and nitrobenzene

    H. Li, Y. Han, Z. Shao, N. Li, C. Huang and H. Hou, Dalton Trans., 2017, Advance Article , DOI: 10.1039/C7DT02590D

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