A novel azobenzene covalent organic framework†
Abstract
A novel azobenzene (Azo) monomer was synthesized and employed to produce Azo-containing covalent organic frameworks (Azo-COF) through the borate ester formation reaction. The trans-to-cis photoisomerization of Azo units in Azo-COF occurred under irradiation with 365 nm UV light. The photoisomerization of Azo units could decrease the crystallinity of Azo-COF but could not change the pore size of Azo-COF.