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Issue 21, 2017
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A terbium(III)-based coordination polymer for selective and sensitive sensing of nitroaromatics and ferric ion: synthesis, crystal structure and photoluminescence properties

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Abstract

A potent luminescent sensor for the detection of 4-nitrophenol (4-NP) and Fe3+ ion was developed based on a terbium(III)-based coordination polymer, [Tb(H2O)5(BTEC)][H(C5H6N2)]·3H2O (1), which was prepared under hydrothermal condition using a benzene-1,2,4,5-tetracarboxylate (BTEC) bridging ligand. 1 possesses one-dimensional zig-zag chains decorated with carboxylate functional sites and protonated 4-aminopyridine guests located in interlayer channels. The strong green emission of 1 could be efficiently quenched by trace amounts of 4-NP through a luminescence quenching mechanism even in the presence of other aromatic compounds such as 1,2-dimethylbenzene, bromobenzene, phenol, 4-bromophenol, 4-nitrotoluene, 1,2-dinitrobenzene, nitrobenzene, 2,6-dinitrotoluene, and 2,4,6-trinitrophenol. Furthermore, 1 exhibits superior luminescence quenching behavior towards Fe3+ ion over other competing interfering metallic ions such as Cr3+, Cu2+, Na+, Mg2+, Mn2+, Co2+, Fe2+, Pb2+, Pd2+, and Zn2+. The possible luminescence quenching mechanisms were also discussed. Moreover, visual fluorescent test papers based on 1 were fabricated and could be utilized for selective detection of nitroaromatic compounds and metal ions.

Graphical abstract: A terbium(iii)-based coordination polymer for selective and sensitive sensing of nitroaromatics and ferric ion: synthesis, crystal structure and photoluminescence properties

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Publication details

The article was received on 10 Jul 2017, accepted on 19 Sep 2017 and first published on 02 Oct 2017


Article type: Paper
DOI: 10.1039/C7NJ02492D
Citation: New J. Chem., 2017,41, 12713-12720
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    A terbium(III)-based coordination polymer for selective and sensitive sensing of nitroaromatics and ferric ion: synthesis, crystal structure and photoluminescence properties

    R. Feyisa Bogale, Y. Chen, J. Ye, S. Zhang, Y. Li, X. Liu, T. Zheng, A. Rauf and G. Ning, New J. Chem., 2017, 41, 12713
    DOI: 10.1039/C7NJ02492D

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