Two-dimensional covalent organic frameworks with hierarchical porosity.,Chemical Society Reviews

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Two-dimensional covalent organic frameworks with hierarchical porosity.
Chemical Society Reviews ( IF 40.4 ) Pub Date : 2020-05-19 , DOI: 10.1039/d0cs00049c
Rong-Ran Liang ₁ , Shu-Yan Jiang , Ru-Han A , Xin Zhao

Affiliation

Covalent organic frameworks (COFs) are a class of crystalline porous organic polymers assembled by connecting organic building units via covalent bonds. They are characterized as extended two-dimensional (2D) or three-dimensional (3D) frameworks with precise spatial structures and building block distribution. A key feature of COFs is their inherent porosity originating from their well-ordered nanopores which are designable, tunable and modifiable through pore engineering. This review describes the pore engineering of 2D COFs based on their framework topologies. It begins with a brief summary of the pore design principles of 2D COFs which are composed of uniform micropores or mesopores. Then the state-of-the-art progress achieved in a new branch of 2D COFs, that is, heteropore COFs, which possess multiple-pore skeletons and thus exhibit hierarchical porosity, is comprehensively reviewed, including their design strategies, synthesis, characterization, properties and applications. In the last part, personal perspectives on this emerging class of 2D polymers with complex structures and hierarchical porosity are discussed.

中文翻译：

具有分层孔隙率的二维共价有机骨架。

共价有机骨架（COF）是一类通过将有机建筑单元通过共价键。它们的特征是具有精确的空间结构和构造块分布的扩展的二维（2D）或三维（3D）框架。COF的关键特征是其固有的孔隙度，其源于其排列整齐的纳米孔，这些纳米孔可通过孔工程设计，调节和修改。这篇综述基于其框架拓扑描述了二维COF的孔工程。首先简要概述了由均匀微孔或中孔组成的2D COF的孔设计原理。然后，全面回顾了二维COF的新分支即具有多个孔骨架并因此表现出分层孔隙度的异孔COF所取得的最新进展，包括其设计策略，合成，表征，属性和应用。

更新日期：2020-06-22

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