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Syntheses, Structures and Luminescence Sensing Properties of Two Cd(II) MOFs Constructed from Mixed Ligands
Journal of Cluster Science ( IF 2.7 ) Pub Date : 2020-11-13 , DOI: 10.1007/s10876-020-01931-3
Fang-Hua Zhao , Jian-Hui Han , Yu-Wen Lin , Shao-Shuang Zou , Tao Liu , Zhong-Lin Li

Hydrothermally reaction of Cd(NO3)2·4H2O, pimelic acid (H2Pim) mixed with two N-containing ligands of 1,2-bis(2-methyl-imidazol-1-ylmethyl)benzene (1,2-mbix) or 1,3-bis(2-methyl-imidazol-1-ylmethyl)benzene (1,3-mbix) gave rise to two new Cd(II) MOFs, [Cd(Pim)(1,2-mbix)] (1) and [Cd(Pim)(1,3-mbix)]·H2O (2). Both MOFs were structurally characterized by IR and UV–Vis spectra, single-crystal and powder X-ray diffraction, thermogravimetric analyses. MOF 1 shows a fourfold interpenetrating dia network. Differently, MOF 2 shows a 2D → 3D interdigitated architecture base on the 63 hcb layer when 1,2-mbix was replaced by 1,3-mbix. The luminescent properties of 1 and 2 have been investigated. Furthermore, the luminescent quenching experiments suggest both MOFs exhibit good selectivity and sensitivity to detect Fe3+ and Cr2O72− in water.



中文翻译:

混合配体构成的两种Cd(II)MOF的合成,结构和发光传感性质

Cd(NO 32 ·4H 2 O,庚二酸(H 2 Pim)与两个1,2-双(2-甲基-咪唑-1-基甲基)苯的含氮配体混合(1,2 -mbix)或1,3-双(2-甲基-咪唑-1-基甲基)苯(1,3-mbix)生成了两个新的Cd(II)MOF,[Cd(Pim)(1,2-mbix) )](1)和[Cd(Pim)(1,3-mbix)]·H 2 O(2)。两种MOF的结构特征均在于IR和UV-Vis光谱,单晶和粉末X射线衍射,热重分析。MOF 1显示了一个四重互穿的dia网络。与此不同,MOF 2在6的基础上显示了2D→3D叉指式架构 当将1,2-mbix替换为1,3-mbix时为3 hcb层。已经研究了12的发光特性。此外,发光猝灭实验表明,两种MOF都具有良好的选择性和灵敏度,可以检测水中的Fe 3+和Cr 2 O 7 2-

更新日期:2020-11-13
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