| 基于一个四羧酸配体构筑的具有（4,8）连接的镧系金属-有机框架材料及对小分子的检测试验 |
| Two Series of (4,8)-Connected Lanthanide-Metal Organic Frameworks Based on a Tetra-carboxylate Ligand for sensing of small molecules |
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| 摘要: 以3,3',5,5'-四-(羧基苯基)联苯为配体（H4L），与镧系金属Ln(III)盐反应，自组装形成了5个具有三维孔洞结构的镧系金属-有机框架材料：[Ln3L2(H2O)7]·10DMA·2Me2NH2+ (Ln = Gd (1a), Ln = Ho (2a), and [Ln3L2(H2O)3]·nDMA·2Me2NH2+ (Ln = Er, n = 10 (1b), Ln = Yb, n = 9 (2b), Ln = Lu, n = 10 (3b))。单晶X-射线衍射分析表明，这些MOFs属于两种系列的类质同晶化合物，分别为正交晶系Ccca空间群和单斜晶系C2/c空间群。有机小分子溶剂交换荧光研究发现，2b对小分子二氯甲烷和甲苯荧光有增强效应，表现出良好的荧光探测功能。 |
| 关键词: 3,3',5,5'-四(羧基苯基)联苯 金属-有机框架材料；晶体结构；荧光性质 |
| 基金项目: 国家自然科学基金 |
| Abstract: Biphenyl-3,3’,5,5’-tetra-(phenyl-4-carboxylic acid) (H4L) was used to synthesize five microporous three-dimension metal-organic framework with lanthanide metal matrix by intermolecular self-assembly: [Ln3L2(H2O)7]·10DMA·2Me2NH2 (Ln = Gd (1a), Ln = Ho (2a), and [Ln3L2(H2O)3]·nDMA·2Me2NH2 (Ln = Er, n = 10 (1b), Ln = Yb, n = 9 (2b), Ln = Lu, n = 10 (3b)). Single-crystal X-ray diffraction revealed the Ln-MOFs are two series of isomorphous metal organic frameworks, and belong to orthorhombic Ccca space group and monoclinic C2/c space group, respectively. The luminescence intensity of 2b can be modulated by organic small molecule solvents, and 2b exhibited the enhancement of the luminescence intensity when dispersed in CH2Cl2 and toluene. |
| Keywords: biphenyl-3,3’,5,5’-tetra-(phenyl-4-carboxylic acid metal-organic framework crystal structure luminescent property |
| 投稿时间：2016-03-18 修订日期：2016-06-07 |
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