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A series of novel Cadmium(II) coordination polymers with photoluminescence and ferroelectric properties based on zwitterionic ligand

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 the zwitterionic ligand (1,1',1''-(2,4,6-Trimethybenzene-1,3,5-triyl)-tris(methylene)tris(4-carboxypyridinium) tribromide, H3LBr3) and aromatic secondary ligand (H4BTC). Structure determination confirmed that compounds 1 and 3 possess the structures 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 stabilities (up to 300 °C), the titled Cd(II) compounds exhibited different photoluminescent emissions in solid state resulting from coordination environments and crystal structures. Moreover, compound 3 also exhibited a ferroelectric behavior with saturated spontaneous polarization (Ps) of 0.20 C / cm2, indicating that compound 3 is a potential ferroelectric material at room temperature.

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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, Accepted Manuscript
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    A series of novel Cadmium(II) coordination polymers with photoluminescence and ferroelectric properties based on zwitterionic ligand

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

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