Scholarlink

<p>Constitutional isomerism in covalent organic frameworks (COFs) has shown promise for enhancing material properties, especially for photocatalytic applications. Herein, we design two isomeric multicomponent COFs (MC-COFs) via Schiff-base condensation followed by a Povarov reaction to convert the imine linkages into quinoline structures. These isomeric MC-COFs possess opposing C=N bond orientations and differently aligned phenyl groups within COF pores, leading to distinct torsion angles in COF layers. Structural analysis reveals that the enhanced planarity of COFs promotes π-π stacking and electron delocalization, resulting in a favorable band structure and reduced exciton binding energy. Consequently, the COFs achieve a superior hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) production rate of 3128 µmol g<sup>−1</sup> h<sup>−1</sup> under visible light. This study underscores the critical influence of structural isomerism on the photocatalytic efficiency of MC-COFs and provides insights for optimizing COF-based photocatalytic systems.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Influence of structural isomerism in multicomponent covalent organic frameworks on their photocatalytic H2O2 production

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年4月3日

查看全文
  • Bingzi Cai,
  • Zixuan Li,
  • Yizhao Liang,
  • Di Zhang,
  • Yibo Zhou,
  • Yang Liu,
  • Yu Ma,
  • Xin Wang,
  • Yalong Jiao,
  • Yuanyuan Liu,
  • Arne Thomas,
  • Xiaojia Zhao

摘要

Constitutional isomerism in covalent organic frameworks (COFs) has shown promise for enhancing material properties, especially for photocatalytic applications. Herein, we design two isomeric multicomponent COFs (MC-COFs) via Schiff-base condensation followed by a Povarov reaction to convert the imine linkages into quinoline structures. These isomeric MC-COFs possess opposing C=N bond orientations and differently aligned phenyl groups within COF pores, leading to distinct torsion angles in COF layers. Structural analysis reveals that the enhanced planarity of COFs promotes π-π stacking and electron delocalization, resulting in a favorable band structure and reduced exciton binding energy. Consequently, the COFs achieve a superior hydrogen peroxide (H2O2) production rate of 3128 µmol g−1 h−1 under visible light. This study underscores the critical influence of structural isomerism on the photocatalytic efficiency of MC-COFs and provides insights for optimizing COF-based photocatalytic systems.