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

作者：Zhang, Jun^*; Zhao, Meng; Xie, Wenjie; Jin, Jie; Xie, Fazhi; Song, Xiaojie; Zhang, Shengyi; Wu, Jieying; Tian, Yupeng^*

来源：New Journal of Chemistry, 2017, 41(17): 9152-9158.

DOI：10.1039/c7nj00524e

• METAL-ORGANIC FRAMEWORK
• CRYSTAL-STRUCTURES
• ARCHITECTURES

A series of Cd(II) compounds, abbreviated as {[Cd center dot L center dot(BTC)(0.5)center dot H2O]center dot(H2O)(3)}(n) (1), [Cd-5 center dot(PO4)(2)center dot(HPO4)(2)center dot(H2O)(4)](n) (2) and {[Cd-2.5 center dot L center dot(BTC)(1.5)center dot(H2O)(1.5)center dot(DMF)]center dot(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 degrees 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 (P-s) of 0.20 mu C cm(-2), indicating that compound 3 is a potential ferroelectric material at room temperature.

• 出版日期2017-9-7
• 单位安徽大学