Li Huiqing, Shao Pengpeng, Chen Shuqi, Li Guosheng, Feng Xiao, Chen Xiong, Zhang Hui-Jun, Lin Jianbin, Jiang Yun-Bao
Department of Chemistry, College of Chemistry and Chemical Engineering , Xiamen University , Xiamen 361005 , P. R. China.
School of Chemistry and Chemical Engineering , Beijing Institute of Technology , Beijing 100081 , P. R. China.
J Am Chem Soc. 2020 Feb 26;142(8):3712-3717. doi: 10.1021/jacs.9b13559. Epub 2020 Feb 13.
Conventionally, -direction modulation of two-dimensional covalent organic frameworks (2D-COFs) is difficult to achieve because they rely on spontaneous π-π interactions to form 3D architectures. Herein, we report a facile construction of a novel intercalated covalent organic framework (Intercalated-COF) by synchronizing operations of supramolecular donor-acceptor (D-A) interactions (A unit: 2,5,8,11-tetra(-formylphenyl)-perylene diimide (PDI) ; D unit: perylene , as intercalator) in the vertical directions, with polymerizations (by only reacting with -phenylenediamine ) in the lateral directions. In this Intercalated-COF, the PDI-based covalent 2D layers are uniformly separated by perylene guest layers. This supramolecular strategy opens the possibility for -direction modulation of 2D-COFs through "intercalating" various guest molecules and thus may contribute to the exploration of advanced applications of these porous and crystalline frameworks.
传统上，二维共价有机框架（2D-COF）的z方向调制很难实现，因为它们依赖自发的π-π相互作用来形成三维结构。在此，我们报告了一种通过在垂直方向同步超分子供体-受体（D-A）相互作用（A单元：2,5,8,11-四（对苯二甲醛基）苝二酰亚胺（PDI）；D单元：苝，作为插层剂）的操作，并在横向方向进行聚合反应（仅通过对苯二胺反应），来简便构建新型插层共价有机框架（Intercalated-COF）的方法。在这种Intercalated-COF中，基于PDI的共价二维层被苝客体层均匀隔开。这种超分子策略通过“插入”各种客体分子为2D-COF的z方向调制开辟了可能性，因此可能有助于探索这些多孔晶体框架的先进应用。
