一系列基于混合配体策略构筑的金属有机骨架的合成、结构及性质

通过简单高效的醛酮缩合反应，合成了碱性配体2，6-二（4-吡啶基亚甲基）环己酮（BPCH），采用3种芳香羧酸配体：对苯二甲酸（H₂TP）、间苯二甲酸（H₂IP）和均苯三甲酸（H₃TMA），以混合配体策略制备了7例金属有机骨架（MOFs）。用单晶X射线衍射、红外光谱、粉末X射线衍射和热重分析对其进行表征并分析其拓扑结构。MOFs1、2、3均呈现为多样的三维结构，MOFs4~7表现为同构的二维结构。荧光测试结果显示该类化合物对Fe³⁺有较好的荧光猝灭效应，同时对于染料具有一定的吸附能力。

A Series of Metal-Organic Frameworks Based on Mixed Ligand Strategy: Synthesis, Structures, and Properties

Taking advantage of a basic ligand (BPCH=2, 6-bis(4-pyridyl methylidene)cyclohexanone) and three acid ligands (H₂TP=terephthalic acid, H₂IP=isophthalic acid, H₃TMA=1, 3, 5-benzenetricarboxylic acid), seven metal-organic frameworks (MOFs) 1-7 have been achieved by using this acid-base mixed-ligand synthetic strategy. These complexes were characterized by single-crystal X-ray diffraction, IR spectra, powder X-ray diffraction, and thermogravimetric analysis. Diverse 3D structural characters of MOFs 1-3 or 2D structural characters of MOFs 4-7 have been observed. The fluorescence properties of these complexes have been explored, indicating that they had selectivity towards Fe³⁺ ions. Several complexes had shown certain performance for adsorbing dye molecules.