亚胺
共价键
光催化
苄胺
化学
喹啉
光化学
组合化学
化学稳定性
胺气处理
有机化学
催化作用
作者
Rui Xue,Yin-Sheng Liu,Hao Guo,Wu Yang,Guo‐Yu Yang
标识
DOI:10.1016/j.jcis.2023.11.078
摘要
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.
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