Rational Conversion of Imine Linkages to Amide Linkages in Covalent Organic Frameworks for Photocatalytic Oxidation with Enhanced Photostability
Rui Xue, Yin-Sheng Liu, Mingyue Wang, Hao Guo, Wu Yang, Jixi Guo, Guo‐Yu Yang
Abstract
Abstract Covalent organic frameworks (COFs) and their applications in photocatalysis have been extensively studied, but the instability of imine‐linked COFs is an important factor limiting their performance. In this work, two imine‐linked COFs were successfully converted to amide‐linked COFs through post synthetic modification (PSM). The oxidized COFs presented lower binding energy to O 2 , exhibited higher photocatalytic activity for oxidation of thioethers and coupling of benzylamines with excellent stability. The present work can serve as a reliable reference for the development of novel highly active and stable COF‐based photocatalysts.
Topics & Concepts
ImineCovalent bondPhotocatalysisAmideChemistryLimitingCombinatorial chemistryPhotochemistryChemical engineeringOrganic chemistryCatalysisMechanical engineeringEngineeringCovalent Organic Framework ApplicationsMetal-Organic Frameworks: Synthesis and ApplicationsAdvanced Photocatalysis Techniques