Green synthesis of covalent organic frameworks based on reaction media

Abstract

The synthesis of covalent organic frameworks (COFs) has been dominated by the solvothermal method for a long time, in which a large amount of organic solvent is used. In recent years, exploring green synthesis methods of COFs has aroused great interest. In this Feature Article, we summarize the reported green COF synthesis strategies aiming at reducing or avoiding the use of organic solvents and facilitating large-scale synthesis. We introduce the basic synthesis operations and yields, corresponding key factors, product qualities and advantageous applications of these strategies, and their limitations were also discussed.