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<p>sp<sup>2</sup>-Carbon-conjugated organic frameworks (sp<sup>2</sup>c-COFs) are a class of porous crystalline polymers constructed through the ordered linkage of building blocks <i>via</i> vinylene bonds. Because of their high specific surface area, extended planar <i>π</i>-conjugation, and remarkable stability, sp<sup>2</sup>c-COFs are regarded as highly promising novel photocatalysts. This review begins by introducing the design principles and synthetic methods for sp<sup>2</sup>c-COFs. Subsequently, various strategies for enhancing photocatalytic performance have been summarized, including designing donor–acceptor (D-A) structures, crafting charged frameworks, developing heterojunctions, and modifying covalent organic frameworks (COFs) pore channels. We then elaborate on the applications of sp<sup>2</sup>c-COFs in photocatalytic H<sub>2</sub> production, H<sub>2</sub>O<sub>2</sub> production, CO<sub>2</sub> reduction, organic transformation reactions, and uranium extraction from seawater. Finally, the challenges and future prospects of sp<sup>2</sup>c-COFs for practical applications in photocatalysis were discussed.</p>

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Design, Synthesis, and Photocatalytic Applications of sp2-Carbon-Conjugated Organic Frameworks

  • 期刊论文

  • 发表日期：

    2026年4月3日

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  • Meng-Yao Chen,
  • Guang-En Fu,
  • Wen-Kai Zhao,
  • Tao Zhang

摘要

sp2-Carbon-conjugated organic frameworks (sp2c-COFs) are a class of porous crystalline polymers constructed through the ordered linkage of building blocks via vinylene bonds. Because of their high specific surface area, extended planar π-conjugation, and remarkable stability, sp2c-COFs are regarded as highly promising novel photocatalysts. This review begins by introducing the design principles and synthetic methods for sp2c-COFs. Subsequently, various strategies for enhancing photocatalytic performance have been summarized, including designing donor–acceptor (D-A) structures, crafting charged frameworks, developing heterojunctions, and modifying covalent organic frameworks (COFs) pore channels. We then elaborate on the applications of sp2c-COFs in photocatalytic H2 production, H2O2 production, CO2 reduction, organic transformation reactions, and uranium extraction from seawater. Finally, the challenges and future prospects of sp2c-COFs for practical applications in photocatalysis were discussed.