期刊
DALTON TRANSACTIONS
卷 44, 期 4, 页码 1636-1645出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4dt03271c
关键词
-
资金
- National Natural Science Foundation of China [U1304210, 21401006, 21371089]
- Natural Science Projects of Department of Education of Henan Province [13A150013]
Hydrothermal reactions of Cd(OAc)(2)center dot 2H(2)O with a flexible V-shaped bipyridyl benzene ligand and five benzenedicarboxylic acid derivatives gave rise to five new coordination polymers i.e., [Cd(1,4-BDC)(bpmb)(H2O)](n) (1), {[Cd(1,3-BDC)(bpmb)]center dot 0.125H(2)O}(n) (2), [Cd-2(5-Me-1,3-BDC)(2)(bpmb)(2)](n) (3), [Cd(5-NO2-1,3-BDC)(bpmb)(H2O)](n) (4) and [Cd(5-OH-1,3-BDC)(bpmb)(H2O)](n) (5) (bpmb = 1,3-bis(pyridine-3-ylmethoxy) benzene, 1,4-H2BDC = 1,4-benzenedicarboxylic acid, 1,3-H2BDC = 1,3-benzenedicarboxylic acid, 5-Me-1,3-H2BDC = 5-methyl-1,3-benzenedicarboxylic acid, 5-NO2-1,3-H2BDC = 5-nitro-1,3-benzenedicarboxylic acid, 5-OH-1,3-H2BDC = 5-hydroxy-1,3-benzenedicarboxylic acid). Their structures have been determined by single-crystal X-ray diffraction analyses, elemental analyses, IR spectra, powder X-ray diffraction (PXRD) and thermogravimetric analyses (TGA). Compound 1 is a two-fold interpenetrating network showing the coexistence of polyrotaxane and polycatenane characters. Compounds 2 and 3 exhibit similar 2D (3,5)-connected (4(2).6(7).8)(4(2).6) nets in which the bpmb ligands work as lockers in interlocking 1D [Cd(1,3-BDC/5-Me-1,3-BDC)](n) chains. Compound 4 shows a 2D 4-connected (66) sandwich-like structure with differently oriented [Cd(5-NO2-1,3-BDC)](n) chains. Compound 5 is a 3D supramolecular pcu net based on a 1D ladder-shaped chain. These results suggest that the substituted positions of carboxylate groups and changes in substituted R groups in the 5-position of BDC ligands have significant effect on the final structures. These compounds exhibited relatively good photocatalytic activity towards the degradation of methylene blue (MB) in aqueous solution under UV irradiation. Moreover, solid-state photoluminescence properties of 1-5 were also investigated.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据