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三维镍(Ⅱ)-镧(Ⅲ)混金属配位聚合物的合成、晶体结构及其荧光性质(英文)
Syntheses, Structures and Luminescent Properties of 3D Ni(Ⅱ)-Ln(Ⅲ) Heterometallic Coordination Polymers Constructed from the Triazol-Based Ligand
【摘要】 以1,2,3-三氮唑基杂环多羧酸H3ctia(H3ctia=5-(4-carboxyl-1H-1,2,3-triazol-1-yl) isophthalic acid)为配体合成了一系列三维镍(Ⅱ)-镧(Ⅲ)混金属配位聚合物[Ln2Ni(tia)4(H2O)4]n(Ln=La (1)、Ce (2)、Pr (3)、Nd (4)、Sm (5)、Eu (6)、Gd (7)、Tb (8)、Dy (9))和{[Yb2Ni(tia)4(H2O)2]·2H2O}n(10)(tia=5-(1H-1,2,3-triazol-1-yl)isophthalate)。X射线单晶衍射测试表明,配合物110皆具有三维网格结构,其中配合物19同构,而配合物10的组成与19一样,但晶体学结构则完全不同。在可见光区域,化合物5、6、8和9分别出现了Sm、Eu、Tb和Dy的特征发射峰,其中配合物6、8和9的荧光寿命分别为234、598和2.96μs;在近红外区域,配合物4、9和10分别出现了Nd、Dy和Yb的特征发射峰,对应的荧光寿命分别为4.25、3.42和5.66μs。
【Abstract】 A series of Ni(Ⅱ)-Ln(Ⅲ) heterometallic isomers [Ln2 Ni(tia)4(H2 O)4]n(Ln=La(1), Ce(2), Pr(3), Nd(4), Sm(5), Eu(6), Gd(7), Tb(8) and Dy(9)), and {[Yb2 Ni(tia)4(H2 O)2]·2 H2 O}n(10)(tia=5-(1 H-1,2,3-triazol-1-yl)isophthalate)have been constructed from the tritopic 1,2,3-trazol-based aromatic heterocyclic carboxylic ligand H3 ctia(H3 ctia=5-(4-carboxyl-1 H-1,2,3-triazol-1-yl) isophthalic acid). The results of single crystal X-ray diffraction show that all of these complexes possess 3 D microporous frameworks. Complexes 19 are isomorphic. The chemical composition of complex 10 is the same as those of 19, but the crystallographic structure is totally different from 19. In the visible region, complexes 5, 6, 8 and 9 exhibit the characteristic luminescent emissions of Sm(Ⅲ), Eu(Ⅲ), Tb(Ⅲ) and Dy(Ⅲ) with the long luminescent lifetime(234 μs for 6, 598 μs for 8 and 2.96 μs for 9). Complexes 4, 9 and 10 show characteristic emissions of Nd(Ⅲ), Dy(Ⅲ), and Yb(Ⅲ) in the near infrared region with the average lifetime of4.25, 3.42 and 5.66 μs, respectively. CCDC: 1822039, 1; 1822038, 2; 1822040, 3; 1822037, 4; 1822035, 5;1822036, 6; 1822041, 7; 1822042, 8; 1822043, 9; 1821893, 10.
【Key words】 coordination polymer; heterometallic complex; crystal structure; luminescent property; triazol-based ligand;
- 【文献出处】 无机化学学报 ,Chinese Journal of Inorganic Chemistry , 编辑部邮箱 ,2018年09期
- 【分类号】O641.4
- 【被引频次】3
- 【下载频次】146