Rationally Designed 2D Covalent Organic Framework with a Brick-Wall Topology

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• 作者：Song-Liang Cai ; Kai Zhang ; Jing-Bo Tan ; Sha Wang ; Sheng-Run Zheng ; Jun Fan ; Ying Yu ; Wei-Guang Zhang ; Yi Liu
• 刊名：ACS Macro Letters
• 出版年：2016
• 出版时间：December 20, 2016
• 年：2016
• 卷：5
• 期：12
• 页码：1348-1352
• 全文大小：391K
• ISSN：2161-1653

文摘

We report the design and synthesis of an imine-based two-dimensional covalent organic framework (2D COF) with a novel brick-wall topology by judiciously choosing a tritopic T-shaped building block and a ditopic linear linker. Unlike the main body of COF frameworks reported to-date, which consists of higher-symmetry 2D topologies, the unconventional layered brick-wall topology have only been proposed but never been realized experimentally. The brick-wall structure was characterized by powder X-ray diffraction analysis, FT-IR, solid state ¹³C NMR spectroscopy, nitrogen, and carbon oxide adsorption–desorption measurements as well as theoretical simulations. Our present work opens the door to the design of novel 2D COFs and will broaden the scope of emerging COF materials.