Liao Qiaobo, Ke Can, Huang Xin, Wang Dongni, Han Qingwen, Zhang Yifan, Zhang Yiying, Xi Kai
School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu, 210023, P. R. China.
Angew Chem Int Ed Engl. 2021 Jan 18;60(3):1411-1416. doi: 10.1002/anie.202012435. Epub 2020 Nov 13.
Post-synthetic modification (PSM) is a prevalent and powerful strategy to introduce desired functionalities into covalent organic frameworks (COFs) for functional products, expediting their applications vastly. Herein, we demonstrate a PSM strategy for functionalizing brominated COFs via the well-developed Suzuki-Miyaura cross-coupling. By this, a variety of functionalities were installed into COFs efficiently, while the crystallinity and porosity of COFs was well-retained. As a proof-of-concept, BrCOF-2 was modified with trifluoromethyl groups to produce a SF adsorbent with remarkably enhanced properties. This facile and versatile approach opens a new door for the synthesis of functional COFs, and greatly expands the scope of their structural design aiming for various properties and applications.
后合成修饰（PSM）是一种普遍且强大的策略，可将所需功能引入共价有机框架（COF）以制备功能性产品，极大地加速了它们的应用。在此，我们展示了一种通过成熟的铃木-宫浦交叉偶联对溴化COF进行功能化的PSM策略。通过这种方法，多种功能被高效地引入到COF中，同时COF的结晶度和孔隙率得到了很好的保留。作为概念验证，BrCOF-2用三氟甲基进行修饰，以制备出性能显著增强的SF吸附剂。这种简便且通用的方法为功能性COF的合成打开了一扇新门，并极大地扩展了其针对各种性能和应用的结构设计范围。
