Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, Jiangxi Province, P. R. China.
School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, Jiangsu Province, P. R. China.
Inorg Chem. 2023 Mar 6;62(9):3799-3807. doi: 10.1021/acs.inorgchem.2c04053. Epub 2023 Feb 21.
Two novel lanthanide metal-organic frameworks (MOFs) with the formulas [Tb(bidc)(Hbidc)(HO)] () and {[Tb(bidc)(HCOO)(DMF)]·solvents} () were synthesized based on 2,1,3-benzothiadiazole-4,7-dicarboxylic acid (HBTDC) under solvothermal conditions. Interestingly, benzimidazole-4,7-dicarboxylic acid (Hbidc) was formed in situ using HBTDC as the starting material. The self-assembly process of the targeted MOFs with different topological structures can be controlled by the solvents and concentration of the reactants. Luminescence experiments show that and exhibit strong yellow-green emission. and can selectively sense benzaldehyde (BzH) via a luminescence quenching effect with detection limits of 15.3 and 1.44 ppm, respectively. In order to expand the practical application of MOF materials, mixed-matrix membranes (MMMs) have been constructed by mixing targeted MOFs and poly(methyl methacrylate) in a ,-dimethylformamide (DMF) solution, which can also be used for BzH vapor sensing. Therefore, the first case of MMMs derived from Tb MOFs has been developed for the reversible detection of BzH vapor, providing a simple and efficient platform for the future detection of volatile organic compounds.
基于 2,1,3-苯并噻二唑-4,7-二羧酸（HBTDC）在溶剂热条件下合成了两个具有化学式Tb(bidc)(Hbidc)(HO)和{[Tb(bidc)(HCOO)(DMF)]·溶剂}()的新型镧系金属-有机骨架（MOFs）。有趣的是，使用 HBTDC 作为起始原料，原位形成苯并咪唑-4,7-二羧酸（Hbidc）。具有不同拓扑结构的目标 MOFs 的自组装过程可以通过溶剂和反应物浓度来控制。荧光实验表明和显示出强烈的黄绿光发射。和可以通过荧光猝灭效应选择性地感应苯甲醛（BzH），检测限分别为 15.3 和 1.44 ppm。为了扩展 MOF 材料的实际应用，通过在，-二甲基甲酰胺（DMF）溶液中混合目标 MOFs 和聚（甲基丙烯酸甲酯）构建了混合基质膜（MMMs），也可用于苯甲醛蒸气感应。因此，开发了第一个源自 Tb MOFs 的 MMMs 用于 BzH 蒸气的可逆检测，为未来挥发性有机化合物的检测提供了一个简单高效的平台。
