Open‐Shelled Covalent–Organic Frameworks Based on Organic Mixed‐Valence Systems with NIR‐II Absorption for Solar‐Heating Activation

作者：Mingxu He, Yuan Hu, Qiuyan Song, Wenjing Wang, Weiquan Xu, Jie Zhao, Mingjun Ma, Shuai Zhao, Kaijie Fan, Jun Nie, Yincheng Chang · 发表于：Advanced Functional Materials · 年份：2024 · DOI：10.1002/adfm.202400490 · 被引用次数：15 · 研究领域：Covalent Organic Framework Applications、Advanced Photocatalysis Techniques、Metal-Organic Frameworks: Synthesis and Applications

Abstract A novel kind of open‐shelled covalent–organic framework (TPAPL‐COF‐OX) is fabricated based on organic mixed‐valence (MV) systems, which is used for aromatic volatile organic compounds (VOCs) adsorption and activation without the artificial energy consumption. The triphenylamine nucleus endow TPAPL‐COF with an abundance of nitrogen‐active sites. A mild oxidation process on TPAPL‐COF results in the generation of MV structures (TPAPL‐COF‐OX), enhancing its absorption capacity into the NIR‐II region. The nitrogen‐rich TPAPL‐COF‐OX exhibits exceptional adsorption capabilities for VOCs. Its broad light absorption spanning from UV to NIR‐II regions endow it with remarkable photothermal properties, enabling it to attain activation temperatures under sunlight without artificial energy consumption. It is expected that this study may present a novel strategy for managing VOCs by solar‐heating activation with energy‐efficient advantages.