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Issue 17, 2017
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A series of novel cadmium(II) coordination polymers with photoluminescence and ferroelectric properties based on zwitterionic ligands

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Abstract

A series of Cd(II) compounds, abbreviated as {[Cd·L·(BTC)0.5·H2O]·(H2O)3}n (1), [Cd5·(PO4)2·(HPO4)2·(H2O)4]n (2) and {[Cd2.5·L·(BTC)1.5·(H2O)1.5·(DMF)]·(H2O)2.35}n (3), were obtained by using a zwitterionic ligand (1,1′,1′′-(2,4,6-trimethybenzene-1,3,5-triyl)-tris(methylene)tris(4-carboxypyridinium) tribromide, H3LBr3) and an aromatic secondary ligand (H4BTC). Structure determination confirmed that compounds 1 and 3 possess the structure of 1D and 2D metal–organic frameworks respectively while compound 2 belongs to a novel inorganic crystal, which may be produced by introducing different categories and concentrations of inorganic acids. In addition to reasonable thermal stability (up to 300 °C), the titled Cd(II) compounds exhibited different photoluminescence emissions in the solid state resulting from coordination environments and crystal structures. Moreover, compound 3 also exhibited a ferroelectric behavior with a saturated spontaneous polarization (Ps) of 0.20 μC cm−2, indicating that compound 3 is a potential ferroelectric material at room temperature.

Graphical abstract: A series of novel cadmium(ii) coordination polymers with photoluminescence and ferroelectric properties based on zwitterionic ligands

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Publication details

The article was received on 13 Feb 2017, accepted on 04 Jul 2017 and first published on 12 Jul 2017


Article type: Paper
DOI: 10.1039/C7NJ00524E
Citation: New J. Chem., 2017,41, 9152-9158
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    A series of novel cadmium(II) coordination polymers with photoluminescence and ferroelectric properties based on zwitterionic ligands

    J. Zhang, M. Zhao, W. Xie, J. Jin, F. Xie, X. Song, S. Zhang, J. Wu and Y. Tian, New J. Chem., 2017, 41, 9152
    DOI: 10.1039/C7NJ00524E

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