Xue Rui, Liu Yin-Sheng, Guo Hao, Yang Wu, Yang Guo-Yu
Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, PR China; MOE Key Laboratory of Cluster Science, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, PR China.
Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, PR China.
J Colloid Interface Sci. 2024 Feb;655:709-716. doi: 10.1016/j.jcis.2023.11.078. Epub 2023 Nov 14.
Post-synthetic modification is an important strategy for improving and enhancing the properties and functions of covalent organic frameworks (COFs). Two imine-linked COFs are converted into the quinolone-linked COFs by converting the dynamic imine linkages in the COFs into more robust quinolone ring via aza-Diels-Alder cycloaddition reaction. The prepared quinolone-linked COFs not only maintain good crystallinity and porosity, but also possess expanded conjugate planes, enhanced light absorption and excellent stability. The quinolone-linked COFs present remarkable performance of photocatalytic oxidation reactions, including oxidation of phenylboric acids, coupling of benzylamine, and oxidation of thioethers. This work is helpful for preparing organic porous photocatalytic materials with high performance and long life.
后合成修饰是改善和增强共价有机框架（COFs）性能与功能的重要策略。通过氮杂狄尔斯-阿尔德环加成反应将COF中的动态亚胺键转化为更稳定的喹诺酮环，从而将两种亚胺连接的COF转化为喹诺酮连接的COF。所制备的喹诺酮连接的COF不仅保持了良好的结晶性和孔隙率，还具有扩展的共轭平面、增强的光吸收和优异的稳定性。喹诺酮连接的COF在光催化氧化反应中表现出卓越的性能，包括苯硼酸的氧化、苄胺的偶联以及硫醚的氧化。这项工作有助于制备高性能和长寿命的有机多孔光催化材料。
