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 |
Syntheses, Structures and Luminescent Properties of 3D Ni(Ⅱ)-Ln(Ⅲ) Heterometallic Coordination Polymers Constructed from the Triazol-Based Ligand |
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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1~10皆具有三维网格结构,其中配合物1~9同构,而配合物10的组成与1~9一样,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2.96 μs;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5.66 μs。 |
关键词: 配位聚合物 混金属配合物 晶体结构 荧光性质 三唑基配体 |
基金项目: 大学生创新创业训练计划项目(No.201610060066)、国家自然科学基金(No.21601135)和天津市高等学校自然科学研究项目(No.2017KJ256)资助 |
Abstract: A series of Ni(Ⅱ)-Ln(Ⅲ) heterometallic isomers[Ln2Ni(tia)4(H2O)4]n (Ln=La (1), Ce (2), Pr (3), Nd (4), Sm (5), Eu (6), Gd (7), Tb (8) and Dy (9)), and {[Yb2Ni(tia)4(H2O)2]·2H2O}n (10) (tia=5-(1H-1,2,3-triazol-1-yl)isophthalate) have been constructed from the tritopic 1,2,3-trazol-based aromatic heterocyclic carboxylic ligand H3ctia (H3ctia=5-(4-carboxyl-1H-1,2,3-triazol-1-yl) isophthalic acid). The results of single crystal X-ray diffraction show that all of these complexes possess 3D microporous frameworks. Complexes 1~9 are isomorphic. The chemical composition of complex 10 is the same as those of 1~9, but the crystallographic structure is totally different from 1~9. 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 of 4.25, 3.42 and 5.66 μs, respectively. |
Keywords: coordination polymer heterometallic complex crystal structure luminescent property triazol-based ligand |
投稿时间:2018-05-03 修订日期:2018-05-21 |
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林雨青,高敏,张辉,彭雪,顾文,刘欣,廖圣云.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[J].无机化学学报,2018,34(9):1600-1609. |
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