期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 643, 期 -, 页码 340-349出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2023.04.017
关键词
6-Diaminoanthraquinone; Imines; Covalent organic frameworks; Photocatalysis; Visible light
Researchers successfully constructed a visible light photocatalytic covalent organic framework, TpAQ-COF, and used it for the selective oxidation of amines. This work demonstrates the potential of covalent organic frameworks for selective reactions powered by visible light.
The exploration of emerging photocatalysts like covalent organic frameworks (COFs) is an essential but challenging endeavor to find sustainable solutions for selective organic transformations. Anthraquinones are envisaged to construct COFs for visible light photocatalysis because their derivatives are employed industrially as oxidation catalysts or organic dyes. Herein, an anthraquinone COF, TpAQ-COF, is successfully constructed with 1,3,5-triformylphloroglucinol (Tp) and 2,6-diaminoanthraquinone (AQ). Then, the selective oxidation of amines over TpAQ-COF is implemented. Amines can be effectively converted into corresponding imines over TpAQ-COF powered with green light and oxygen, during which superoxide radical anion is discerned as the pivotal reactive oxygen species. This work suggests that COFs could inherit the advantages of molecular building blocks for selective reactions powered with broad visible light.
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