Modulating N‐Heterocyclic Microenvironment in β ‐Ketoenamine Covalent Organic Frameworks to Boost Overall Photosynthesis of H 2 O 2

Abstract Covalent Organic Frameworks (COFs) have emerged as promising platforms for photocatalytic synthesis of hydrogen peroxide (H 2 O 2 ) due to their tunable chemical compositions and efficient catalytic functionalities. Inspired by the role of the microenvironment in enzyme catalysis, this study introduces various N‐heterocyclic species into β ‐ketoenamine COFs (N x ‐COFs, where N x represents the number of nitrogen atoms in the N‐heterocycle) to regulate the microenvironment around catalytic sites on acceptor‐donor‐acceptor (A‐D‐A) COFs foroverall H 2 O 2 photosynthesis in pure water. The N x ‐COFs exhibit distinct H 2 O 2 photosynthetic rates following the number of nitrogen atoms sequence of N 3 ‐COF…

• CU
  City University of Hong Kong

  Awards: 7020089, 9380117
• NN
  National Natural Science Foundation of China

  Award: 51272052
• IA
  Innovation and Technology Fund

  Award: ITS/322/22
• SK
  State Key Laboratory of Supramolecular Structure and Materials

  Award: sklssm2024039