Sun Light Responsive 2D Covalent‐Organic Frameworks Platform as a Catalysts Boost C–H Bond Arylation and Dopamine Regeneration

Photocatalysis is one of the most promising methods for producing organic compounds with a renewable source of energy. Two‐dimensional covalent organic frameworks (2D COFs) are a type of polymer that has developed as a potential light‐harvesting catalyst for artificial photosynthesis with a design‐controllable platform that might be developed into a new type of cost‐effective and metal‐free photocatalyst. Here, we present a two‐dimensional covalent organic framework synthesis technique as a low‐cost and highly efficient visible light active flexible photocatalyst for C–H bond activation and dopamine regeneration. 2D COF were synthesized from tetramino‐benzoquinone (TABQ) and terapthaloyl chloride monomer through condensation polymerization reaction and the resultant photocatalyst have remarkable performance due to its visible light‐harvesting capacity, appropriate band gap, and highly organized π‐electron channels. The synthesized photocatalyst is capable to convert dopamine into leucodopaminechrome with a higher yield (77.08%) and also capable to activate the C–H bond between 4‐nitrobenzenediazonium tetrafluoroborate and pyrrole. Here, we synthesized a sunlight‐responsive 2D covalent‐organic frameworks platform for boosting up C–H bond arylation and dopamine regeneration. 2D covalent‐organic frameworks have been more effective due to their excellent band gap, photo‐stability reusability and efficient electron transfer capability. The products with a C–H bond aryl group and generation of leucodopaminechrome have numerous pharmaceutical uses.