Jiao Jingjing, Jiang Donghao, Chen Fengli, Bai Dongjie, He Yabing
College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, China.
Dalton Trans. 2017 Jun 28;46(24):7813-7820. doi: 10.1039/c7dt01450c. Epub 2017 Jun 8.
A new copper-based metal-organic framework [CuL(HO)]·5DMF·2HO (ZJNU-56) has been solvothermally synthesized using a custom-designed asymmetric rigid bent diisophthalate ligand, 5,5'-(1-amine-naphthyl-2,4-diyl) diisophthalic acid (HL), and structurally determined by single-crystal X-ray diffraction. ZJNU-56 features a three-dimensional (3D) open framework incorporating three different types of metal-organic cages and two distinct types of one-dimensional channels. With a moderate BET surface area of 1655 m g, optimized pore structure, and functional sites (open copper sites and Lewis basic amine groups) on the cage surface, ZJNU-56 after desolvation exhibits highly selectively adsorptive separation of CH and CO over CH under ambient conditions. At 298 K, the predicted IAST selectivities are 35.7-72.9 for an equimolar CH/CH gas mixture and 6.8-7.0 for an equimolar CO/CH gas mixture at pressures varying from 1 to 109 kPa, respectively, which are among the highest reported to date for copper-based MOFs.
一种新型的铜基金属有机框架材料[CuL(HO)]·5DMF·2HO（ZJNU-56）已通过溶剂热法合成，该方法使用了定制设计的不对称刚性弯曲二异酞酸酯配体5,5'-(1-氨基萘基-2,4-二基)二异酞酸（HL），并通过单晶X射线衍射确定了其结构。ZJNU-56具有三维（3D）开放框架，包含三种不同类型的金属有机笼和两种不同类型的一维通道。ZJNU-56在脱溶剂后具有适中的BET表面积1655 m g、优化的孔结构以及笼表面的功能位点（开放铜位点和路易斯碱性胺基），在环境条件下对CH和CO相对于CH表现出高度选择性的吸附分离。在298 K时，对于等摩尔的CH/CH气体混合物，在1至109 kPa的压力范围内，预测的IAST选择性为35.7 - 72.9；对于等摩尔的CO/CH气体混合物，预测的IAST选择性为6.8 - 7.0，这些是迄今为止报道的铜基MOF中最高的选择性之一。
