一种丁二烯连接的共价有机框架的多组分合成
Multi-Component Synthesis of a Buta-1,3-diene-Linked Covalent Organic Framework.
作者信息
Su Yan, Li Bo, Xu Hong, Lu Chuangye, Wang Shengdong, Chen Bin, Wang Zaoming, Wang Weitao, Otake Ken-Ichi, Kitagawa Susumu, Huang Liangbin, Gu Cheng
机构信息
State Key Laboratory of Luminescent Materials and Devices, Institute of Polymer Optoelectronic Materials and Devices, South China University of Technology, Guangzhou 510640, P. R. China.
Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, P. R. China.
出版信息
J Am Chem Soc. 2022 Oct 12;144(40):18218-18222. doi: 10.1021/jacs.2c05701. Epub 2022 Sep 7.
We report a multi-component synthetic strategy on a two-dimensional crystalline covalent organic framework (COF) by connecting acetonitrile with aromatic aldehyde and acetaldehyde moieties to form an unprecedented cyano-substituted buta-1,3-diene linkage. Different from most of the COFs that were crystallized from the condensations from two components, the presented COF is generated from two competitive and reversible reactions among three moieties. The buta-1,3-diene COF exhibits remarkable photoactivity with a low exciton binding energy of 44.4 ± 1.5 meV for promoted charge separation, which enables the buta-1,3-diene-linked COF as an efficient photocatalyst for various aerobic oxidation reactions under visible light. Our multi-component synthesis strategy may provide new sights for synthesizing COFs with structural diversity and functional variability that are hard to achieve by traditional COF synthesis.
我们报道了一种二维结晶共价有机框架（COF）的多组分合成策略，该策略通过将乙腈与芳香醛和乙醛部分连接，形成了前所未有的氰基取代的1,3 - 丁二烯键。与大多数由两种组分缩合结晶而成的COF不同，所呈现的COF是由三个部分之间的两个竞争性可逆反应生成的。1,3 - 丁二烯COF表现出显著的光活性，其激子结合能低至44.4±1.5 meV，有利于电荷分离，这使得1,3 - 丁二烯连接的COF成为可见光下各种需氧氧化反应的高效光催化剂。我们的多组分合成策略可能为合成具有结构多样性和功能可变性的COF提供新的视角，而这些特性是传统COF合成难以实现的。
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