A series of novel cadmium(ii) coordination polymers with photoluminescence and ferroelectric properties based on zwitterionic ligands. (31st July 2017)

• Record Type: Journal Article
• Authors: Zhang, Jun; Zhao, Meng; Xie, Wenjie; Jin, Jie; Xie, Fazhi; Song, Xiaojie; Zhang, Shengyi; Wu, Jieying; Tian, Yupeng
• Is Part Of: New journal of chemistry. Volume 41:Number 17(2017)
• Page Start: 9152
• Page End: 9158
• Publication Date: 2017-07-31
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/c7nj00524e
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : Herein, a series of Cd(ii ) compounds were obtained by using a zwitterionic ligand (H3 LBr3 ) and an aromatic secondary ligand (H4 BTC). Abstract : A series of Cd(ii ) compounds, abbreviated as {[Cd·L·(BTC)0.5 ·H2 O]·(H2 O)3 } n (1 ), [Cd5 ·(PO4 )2 ·(HPO4 )2 ·(H2 O)4 ] n (2 ) and {[Cd2.5 ·L·(BTC)1.5 ·(H2 O)1.5 ·(DMF)]·(H2 O)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, H3 LBr3 ) and an aromatic secondary ligand (H4 BTC). Structure determination confirmed that compounds1 and3 possess the structure of 1D and 2D metal–organic frameworks respectively while compound2 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, compound3 also exhibited a ferroelectric behavior with a saturated spontaneous polarization ( P s ) of 0.20 μC cm −2, indicating that compound3 is a potential ferroelectric material at room temperature.