Flexible covalent porphyrin framework film: An emerged platform for photocatalytic C H bond activation

卟啉 共价键 光催化 材料科学 共价有机骨架 光化学 催化作用 芳基 产量(工程) 组合化学 化学工程 化学 有机化学 烷基 复合材料 工程类
作者
Chandani Singh,Tae Wu Kim,Rajesh K. Yadav,Jin‐Ook Baeg,Vitthal L. Gole,Atul Pratap Singh
出处
期刊:Applied Surface Science [Elsevier]
卷期号:544: 148938-148938 被引量:22
标识
DOI:10.1016/j.apsusc.2021.148938
摘要

Photocatalysis is one of the most promising ways for the production of organic chemicals with renewable energy source. For the development of cost-effective and metal-free catalysts, two-dimensional covalent organic framework (COF) has been emerged as a photocatalyst. Here, we report the synthetic method of two-dimensional covalent porphyrin framework (2D CPF) and the fabrication procedure of highly active flexible film. 2D CPF were constructed from tetrakis-(4-amino-phenyl)-porphyrin (TAPP) and tetrakis-(4-nitro-phenyl)-porphyrin (TNPP) monomers through the poly-condensation reaction and the resultant composite showed the superb harvesting ability of solar light, the suitable optical band-gap, and the highly ordered π-electron channels which facilitates efficient charge migrations. The 2D CPF photocatalyst deposited on the thin film was readily applicable to light-induced activation of CH bond between p-position of substituted aryl diazonium salts and heteroarenes, and exhibited the high selectivity (~99%) as well as high production yield. Our results show an experimental benchmark for the use of flexible COF film as a highly practical and efficient solar light responsive photocatalyst for the selective CH bond formation in between substituted aryl diazonium salts and heteroarenes derivatives.
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