具有磁性、荧光和质子传导特性以及对阳离子染料选择性吸附的阴离子镧系金属有机框架
Anionic lanthanide metal-organic frameworks with magnetic, fluorescence, and proton conductivity properties and selective adsorption of a cationic dye.
作者信息
Zhang Xiao-Nuan, Chen Bo-Chen, Zhang Jia-Li, Zhang Jia-Lin, Liu Sui-Jun, Wen He-Rui
机构信息
School of Chemistry and Chemical Engineering, Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi Province, P.R. China.
出版信息
Dalton Trans. 2022 Oct 25;51(41):15762-15770. doi: 10.1039/d2dt02347d.
Two novel microporous anionic lanthanide metal-organic frameworks (Ln-MOFs), namely {[(CH)NH][Ln(bptc)]·2HO} (Ln = Gd (1) and Dy (2), Hbptc = biphenyl-3,3',5,5'-tetracarboxylic acid) with a new 4,8-connected topology have been synthesized and structurally characterized. Ln-MOF 1 shows a significant magnetocaloric effect with -Δmaxm = 26.37 J kg K at 2 K for Δ = 7 T, and a high proton conductivity of 1.02 × 10 S cm at 323 K and 90% RH. Moreover, Ln-MOF 1 shows specific selective adsorption of the cationic dye Rhodamine B. Ln-MOF 2 exhibits field-induced slow magnetic relaxation with an energy barrier () of 48.19 K, characteristic emission of Dy, and selective adsorption of Rhodamine B. Therefore, 2 is a multifunctional Ln-MOF with magnetic, fluorescence and selective adsorption properties.
两种新型微孔阴离子镧系金属有机框架材料（Ln-MOFs），即{[(CH)NH][Ln(bptc)]·2HO}（Ln = Gd (1) 和 Dy (2)，Hbptc = 联苯 - 3,3',5,5'-四羧酸），具有新的4,8 - 连接拓扑结构，已被合成并进行了结构表征。Ln-MOF 1在2 K时，对于Δ = 7 T显示出显著的磁热效应，-Δmaxm = 26.37 J kg K，并且在323 K和90%相对湿度下具有1.02 × 10 S cm的高质子传导率。此外，Ln-MOF 1对阳离子染料罗丹明B表现出特定的选择性吸附。Ln-MOF 2表现出场诱导的慢磁弛豫，能垒（）为48.19 K，具有Dy的特征发射，并且对罗丹明B有选择性吸附。因此，2是一种具有磁性、荧光和选择性吸附特性的多功能Ln-MOF。
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