Constructing three new metal-organic frameworks based on a mixed-donor ligand: Topological analysis and fluorescence properties

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• 作者：Xiao-Fang Wang ; Ying Pan ; Zhan Li ; Xiu Li ; Shi-Lun Qiu ; Ming Xue ; ^{xueming@jlu.edu.cn}
• 关键词：Metal&ndash ; organic frameworks ; Mixed-donor ligands ; Luminescence ; Topology ; Conformation
• 刊名：Polyhedron
• 出版年：2017
• 出版时间：28 January 2017
• 年：2017
• 卷：122
• 期：Complete
• 页码：55-60
• 全文大小：1870 K
• 卷排序：122

文摘

Three new metal–organic frameworks (MOFs), [Zn2(TZI)(μ3-OH)(H2O)2]·(CH3)2NH (JUC-165), [Cd5(TZI)3(μ3-OH)(H2O)7]·4H2O (JUC-166), and [Cd(TZI)]·(CH3)2NH2·H2O (JUC-167) (JUC = Jilin University China) have been synthesized by self-assembly of Zn2+/Cd2+ ions and a prominent ligand, 5-tetrazolylisophthalic acid (H3TZI). JUC-165 exhibits fascinating three-dimensional (3D) structure containing 1D rectangular channels with dimensions of 6.5 × 3.0 Å2 and it performs (5,5)-connected topology with a Schläfli symbol of 4664, JUC-166 displays a 2D sandwich-layer which further forms into a 3D supermolecular structure by H-bonds reactions and JUC-167 exhibits (4,4)-connected 3D frameworks with a Schläfli symbol of 42638. Furthermore, we research the fluorescence properties of these new MOFs measured at room temperature, and the results reveal that JUC-165, JUC-166 and JUC-167 display strong main emission spectra peaks at 410, 437 and 415 nm, respectively.