Synthesis of phenol esters by direct C–H activation of aldehydes using a highly efficient and reusable copper-immobilized polyimide covalent organic framework (Cu@PI-COF)

Abstract

In the present study, we report the design and fabrication of thermally and chemically stable copper-based polyimide covalent organic framework (Cu@PI-COF) via a facile and straightforward synthetic approach. The as-synthesized...

Defect engineering in conjugated polyimides for promoting visible-light-driven photocatalytic benzylamine oxidation

“…Due to its good physicochemical properties, radiation resistance and high mechanical properties, it has been widely applied in high-tech industries such as electronics, optics, aerospace and chemicals. [1][2][3][4][5][6][7] In recent years, aromatic polyimides formed alternately by electron-donating groups (amine groups) and electron-withdrawing groups (anhydride groups) possessing a tunable molecular structure and superior stability have been in the spotlight, and have been considered as excellent photocatalyst candidates for hydrogen production, pollutant degradation, and organo-catalysis. [8][9][10][11][12] Moreover, the solubility, composition, crystallinity and electronic structure of polyimide materials can be further expanded by using different monomer types, by changing the ratio of monomers or adopting new polymerization methods.…”