Conjugated-engineering covalent organic framework for synergistic artificial photosynthesis of hydrogen peroxide and high-value chemicals

Artificial photosynthesis holds great promise for the production of hydrogen peroxide (H2O2), an environmentally friendly oxidant and clean fuel. However, the synergistic photosynthesis of H2O2 and high-value chemicals in blue light-emitting diodes (LEDs) has not yet been realized. Herein, we develop a conjugated-engineering covalent organic framework (COF), designated as TANB-Py-COF, which serves as an efficient catalyst in the photosynthesis of H2O2 under blue LEDs. An apparent quantum yield of 7.87% and a H2O2 production rate of 18.32 mmol g-1 h-1 are achieved. In addition, the synergistic photosynthesis of imines via amine-coupling or photooxidation of thioethers is realized with a yield up to 99%. This work establishes a precedent for the development of COF-based photocatalytic strategies for the simultaneous artificial photosynthesis of hydrogen peroxide and high-value chemicals in blue LEDs.