Porous metal–organic frameworks (MOFs) with an extensive range of pore sizes have great potential for efficient separation of small organic molecules. Herein, we report a new stable porous metal–organic framework {Cu₃L₂(4,4′-BPD)[NH(CH₃)₂]·7DMA·12H₂O}_n (YCZ-1), which was fabricated from a Cu-paddlewheel metal node and a new linker, namely 3,6-bis(4-benzoic acid)-N-(4-benzoic acid) carbazole (H₃L). YCZ-1 possesses a doubly interpenetrated 3,5,6-connected three-dimensional (3D) framework with a Schläfli symbol of {5¹²·8³}·{5²·8}₄·{5⁶·8⁴}₂, which is a new topology. The crystalline size of YCZ-1 could be controlled by adding different doses of dimethylamine, which would also be generated from DMA dissociated during the solvothermal reaction. Meanwhile, with excellent structural stability and outstanding surface area, the crystalline material YCZ-1 could be utilized as a stationary phase for high performance liquid chromatography (HPLC) separations during the separation of small organic molecules.

中文翻译：

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基于3,6-双（4-苯甲酸）-N-（4-苯甲酸）咔唑的多孔金属-有机骨架，用于HPLC分离有机小分子†

具有广泛孔径范围的多孔金属有机框架（MOF）具有有效分离有机小分子的巨大潜力。在这里，我们报告了一种新的稳定的多孔金属-有机骨架{Cu ₃ L ₂（4,4'-BPD）[NH（CH ₃）₂ ]·7DMA·12H ₂ O} _n（YCZ-1）的制备它来自一个铜桨金属节点和一个新的连接基，即3,6-双（4-苯甲酸）-N-（4-苯甲酸）咔唑（H ₃ L）。YCZ-1具有双互穿插的3,5,6连接的三维（3D）框架，其Schläfli符号为{5 ¹² ·8³ }·{5 ² ·8} ₄ ·{5 ⁶ ·8 ⁴ } ₂，这是一个新的拓扑。YCZ-1的晶体大小可以通过添加不同剂量的二甲胺来控制，二甲胺也可能是由溶剂热反应过程中解离的DMA产生的。同时，具有优异的结构稳定性和出色的表面积，晶体材料YCZ-1可用作固定相，用于在分离有机小分子过程中进行高效液相色谱（HPLC）分离。