3D Cage COFs: A Dynamic Three-Dimensional Covalent Organic Framework with High-Connectivity Organic Cage Nodes,Journal of the American Chemical Society

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3D Cage COFs: A Dynamic Three-Dimensional Covalent Organic Framework with High-Connectivity Organic Cage Nodes
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2020-09-06 , DOI: 10.1021/jacs.0c07732
Qiang Zhu ₁ , Xue Wang _{1,

2} , Rob Clowes ₁ , Peng Cui ₁ , Linjiang Chen _{1,

2} , Marc A Little ₁ , Andrew I Cooper _{1,

2}

Affiliation

Three-dimensional (3D) covalent organic frameworks (COFs) are rare because there is a limited choice of organic building blocks that offer multiple reactive sites in a polyhedral geometry. Here, we synthesized an organic cage molecule (Cage-6-NH2) that was used as a triangular prism node to yield the first cage-based 3D COF, 3D-CageCOF-1. This COF adopts an unreported 2-fold interpenetrated acs topology and exhibits reversible dynamic behavior, switching between a small-pore (sp) structure and a large-pore (lp) structure. It also shows high CO2 uptake and captures water at low humidity (<40%). This demonstrates the potential for expanding the structural complexity of 3D COFs by using organic cages as the building units.

中文翻译：

3D Cage COFs：具有高连接性有机笼节点的动态三维共价有机框架

三维 (3D) 共价有机框架 (COF) 很少见，因为在多面体几何结构中提供多个反应位点的有机构建块的选择有限。在这里，我们合成了一种有机笼分子 (Cage-6-NH2)，用作三棱柱节点以产生第一个基于笼的 3D COF，3D-CageCOF-1。该 COF 采用未报告的 2 倍互穿 acs 拓扑结构并表现出可逆的动态行为，在小孔 (sp) 结构和大孔 (lp) 结构之间切换。它还显示出高 CO2 吸收率并在低湿度 (<40%) 下捕获水。这证明了通过使用有机笼作为构建单元来扩展 3D COF 结构复杂性的潜力。

更新日期：2020-09-06

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