State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University , Changchun 130012, P. R. China.
Division of Physical Sciences and Engineering, Advanced Membranes & Porous Materials Center, Functional Materials Design, Discovery & Development (FMD3), King Abdullah University of Science and Technology (KAUST) , 4700, Thuwal 23955-6900, Kingdom of Saudi Arabia.
ACS Appl Mater Interfaces. 2017 Oct 4;9(39):33521-33527. doi: 10.1021/acsami.7b06010. Epub 2017 Jul 11.
A strategy based on metal-ligand directed assembly of metal-organic squares (MOSs), built-up from four-membered ring (4MR) secondary building units (SBUs), has been employed for the design and construction of isoreticular zeolite-like supramolecular assemblies (ZSAs). Four porous Co-based ZSAs having the same underlying gis topology, but differing only with respect to the capping and bridging linkers, were successfully isolated and fully characterized. In this series, each MOS in ZSA-3-ZSA-6 possess an ideal square geometry and is connected to four neighboring MOS via a total of 16 hydrogen bonds to give a 3-periodic porous network.To systematically assess the effect of the pore system (size and functionality) on the gas adsorption properties, we evaluated the MOSs for their affinity for different probe molecules such as CO and light hydrocarbons. ZSA-3-ZSA-6 showed high thermal stability (up to 300 °C) and was proven highly porous as evidenced by gas adsorption studies. Notably, alkyl-functionalized MOSs were found to offer potential for selective separation of CO, CH, and CH from CH and H containing gas stream, such as natural gas and refinery-off gases.
基于金属-配体导向的四元环（4MR）次级构筑单元（SBU）构筑的金属-有机正方形（MOS）的组装策略，已被用于设计和构建等结构沸石样超分子组装体（ZSA）。成功分离并充分表征了具有相同基本 GIS 拓扑结构但仅在封端和桥连配体上有所不同的四个多孔 Co 基 ZSA。在该系列中，ZSA-3-ZSA-6 中的每个 MOS 均具有理想的正方形几何形状，并通过总共 16 个氢键与四个相邻的 MOS 连接，形成了具有 3 周期多孔网络。为了系统地评估孔系统（尺寸和功能）对气体吸附性能的影响，我们评估了 MOS 对不同探针分子（如 CO 和轻烃）的亲和力。ZSA-3-ZSA-6 表现出高热稳定性（高达 300°C），并且通过气体吸附研究证明其具有高多孔性。值得注意的是，烷基功能化的 MOS 有望用于从含 CO、CH 和 CH 的天然气和炼油厂废气等气体流中选择性分离 CO、CH 和 CH。
