Acceptor‐Bridged Covalent Organic Frameworks for Boosted Photocatalytic Properties

ABSTRACT Rapid recombination of photogenerated carriers severely limits the photocatalytic performance of covalent organic frameworks (COFs). We herein introduce an acceptor‐bridge strategy, embedding electron‐withdrawing bridges into donor–acceptor COF backbones, to promote charge transfer and enhance photocatalytic properties. Relative to an acceptor‐free reference COF (Py‐ N ‐BT‐COF), the acceptor‐bridged COFs, particularly COF‐4F bearing tetrafluorobenzene bridges, exhibit significantly superior singlet oxygen ( 1 O 2 ) generation capacity, reaching approximately 10 times higher than that of the acceptor‐free counterpart. Furthermore, these materials are able to efficiently convert 1,5‐dihydroxynaphthalene to the antitumor agent juglone. This work establishes acceptor‐bridge engineering as a powerful approach for accelerating charge transfer and boosting photocatalytic performance in COF‐based materials.