| 基于半刚性三角形羧酸配体构筑的配位聚合物的合成,结构及其荧光性质 |
| Syntheses, Crystal Structures and Properties of Coordination Polymers Built from a Semi-rigid Tripod Carboxylic Acid |
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| 摘要: 通过使用一个半刚性的多齿羧酸配体3,3',3"-(((2,4,6-trimethylbenzene-1,3,5-triyl)tris(methylene))tris(oxy))tribenzoic acid (H3L),在溶剂热条件下合成了4个配位聚合物{[Cd3(L)2(H2O)2]·5DMF·6H2O}n (1),{[Co3(L)2(H2O)2]·2DMF·6H2O}n (2),{[Mn3(L)2(H2O)2]·3DMF·6H2O}n (3),{[Zn3(L)2(H2O)2]·5DMA·5H2O}n (4),并通过X射线单晶衍射,热重分析对配合物结构进行了表征。4个化合物都是同构的,由沙漏型的M3簇和L3-配体作为次级结构单元,从而给出了一个金属-有机纳米笼的三维结构,从拓扑学的观点看,4个配合物的结构可以看作是三节点的(3,3,6)-连接的网络。荧光光谱测试表明配合物1和4在激发波长为272 nm下,在385 nm处显示了强的宽发射峰。荧光传感测试结果表明,配合物1是一种潜在的硝基苯类化合物的传感材料。 |
| 关键词: 配位聚合物 半刚性羧酸配体 晶体结构 荧光 |
| 基金项目: 国家自然科学基金项目(No.51463019),青海省重点实验室发展专项资金(No.2014-Z-Y31),青海大学综合实力提升工程"人才培养和创新 团队建设"项目资助。 |
| Abstract: By using a semi-rigid multidentate carboxylate linker 3,3',3"-(((2,4,6-trimethylbenzene-1,3,5-triyl)tris(methylene))tris(oxy))tribenzoic acid (H3L), four coordination polymers, namely, {[Cd3(L)2(H2O)2]·5DMF·6H2O}n (1), {[Co3(L)2(H2O)2]·2DMF·6H2O}n (2), {[Mn3(L)2(H2O)2]·3DMF·6H2O}n (3), {[Zn3(L)2(H2O)2]·5DMA·5H2O}n (4) were obtained and characterized by single crystal X-ray diffraction, thermogravimetric, elemental analysis, thermal analyses, IR spectra and fluorescence. Four compounds are isostructural with hourglass M3 clusters and L3- ligands as secondary building units (SBUs) to form a pumpkin-shaped metalorganic nanocage, and possess a three-connected node (3,3,6)-connected 3D network. Compounds 1 and 4 exhibited strong photoluminescent emissions at room temperature with a peak at 385 nm, owing to a ligand-centered excited state. The emission intensities of the compound 1 varied upon contact with different solvents or analytes, exhibiting selective emission quenching responses towards nitroaromatics. CCDC: 1041419, 1; 1041420, 2; 1041421, 2; 1041422, 4. |
| Keywords: coordination polymer semi-rigid carboxylate linker crystal structure luminescence |
| 投稿时间：2015-03-26 修订日期：2015-06-09 |
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| 周莲,铁生年,王志国.基于半刚性三角形羧酸配体构筑的配位聚合物的合成,结构及其荧光性质[J].无机化学学报,2015,31(8):1480-1488. |
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