State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, China.
Adv Sci (Weinh). 2023 Jun;10(16):e2207047. doi: 10.1002/advs.202207047. Epub 2023 Apr 14.
Supramolecular framework (SF) encourages the emergence of porous structures with molecular flexibility while the dimension and morphology controls are less involved even though critical factors are vital for various utilizations. Targeting this purpose, two isolated components are designed and their stepped combinations via ionic interaction, metal coordination, and hydrogen bond into framework assembly with two morphologic states are realized. The zinc coordination to an ionic complex of polyoxometalate with three cationic terpyridine ligands constructs 2D hexagonal SF structure. A further growth along perpendicular direction driven by hydrogen bonding between grafted mannose groups leads to 3D SF assemblies, providing a modulation superiority in one framework for multiple utilizations. The large area of multilayered SF sheet affords a filtration membrane for strict separation of nanoparticles/proteins under gently reduced pressures while the granular SF assembly demonstrates an efficient carrier to load and fix horse radish peroxidase with maintained activity for enzymatic catalysis.
超分子骨架（SF）鼓励具有分子灵活性的多孔结构的出现，而尺寸和形态控制的参与较少，尽管这些因素对于各种应用来说是至关重要的。针对这一目的，设计了两个分离的组件，并通过离子相互作用、金属配位和氢键将它们逐步组合成具有两种形态的框架组装体。锌与带有三个阳离子三吡啶配体的多金属氧酸盐的离子配合物配位，构建了 2D 六方 SF 结构。进一步沿垂直方向的生长是由接枝的甘露糖基团之间的氢键驱动的，导致 3D SF 组装体，在一个框架中提供了对多种应用的调制优势。大面积的多层 SF 片提供了一个过滤膜，在温和的减压下可以严格分离纳米颗粒/蛋白质，而颗粒状 SF 组装体则展示了一个有效的载体，可以负载和固定辣根过氧化物酶，并保持其用于酶催化的活性。
