New Paper “Asymmetric Covalent Triazine Framework for Enhanced Visible Light Photoredox Catalysis via Energy Transfer Cascade” in Angewandte Chemie

The construction of complex multiple component semiconductor photocatalyts allows enhanced catalytic efficiency via multiple charge and energy transfer, which mimics the nature photosystems. However, the efficiency of single component semiconductor photocatalysts is usually inhibited due to the fast recombination of the photo‐generated excitons. Here, we report the design of an asymmetric covalent triazine framework as efficient single component organic semiconductor photocatalyst. Four different molecular donor‐acceptor domains are obtained within the network, leading to an enhanced photogenerated charge separation via intramolecular energy transfer cascade. The superior photocatalytic efficiency of the asymmetric covalent triazine framework over its symmetric counterparts was demonstrated via the visible light‐driven formation of benzophosphole oxides from diphenylphosphine oxide and diphenylacetylene.