Chemical conversion of imine- into quinoline-linked covalent organic frameworks for photocatalytic oxidation

Rui Xue; Yin-Sheng Liu; Hao Guo; Wu Yang; Guo-Yu Yang

doi:10.1016/j.jcis.2023.11.078

Chemical conversion of imine- into quinoline-linked covalent organic frameworks for photocatalytic oxidation

J Colloid Interface Sci. 2024 Feb:655:709-716. doi: 10.1016/j.jcis.2023.11.078. Epub 2023 Nov 14.

Authors

Rui Xue¹, Yin-Sheng Liu², Hao Guo², Wu Yang³, Guo-Yu Yang⁴

Affiliations

¹ 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.
² 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.
³ 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. Electronic address: xbsfda123@126.com.
⁴ MOE Key Laboratory of Cluster Science, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, PR China. Electronic address: ygy@bit.edu.cn.

PMID: 37976744
DOI: 10.1016/j.jcis.2023.11.078

Abstract

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.

Keywords: Coupling of benzylamines; Covalent organic frameworks; Oxidation of phenylboric acids; Oxidation of thioethers; Photocatalysis.