Department of Chemistry and Biomolecular Sciences, Centre for Catalysis Research and Innovation, University of Ottawa, 10 Marie Curie, Ottawa, K1N 6N5, Canada.
Instituto de Tecnología Química UPV-CSIC, Universitat Politècnica de València, Consejo Superior de Investigaciones Científicas, Avenida de los Naranjos s/n, 46022, Valencia, Spain.
Chemistry. 2019 Nov 22;25(65):14928-14934. doi: 10.1002/chem.201903539. Epub 2019 Oct 25.
A mechanistic study is herein presented for the use of heterogeneous photocatalysts based on perylene moieties. First, the successful immobilization of perylene diimides (PDI) on silica matrices is demonstrated, including their full characterization by means of electronic microscopy, surface area measurements, powder XRD, thermogravimetric analysis, and FTIR, Si and C solid-state NMR, fluorescence, and diffuse reflectance spectroscopies. Then, the photoredox activity of the material was tested by using two model reactions, alkene oxidation and 4-nitrobenzylbromide reduction, and mechanistic studies were performed. The mechanistic insights into their photoredox activity show they have promising dual photocatalytic activity for both organic oxidations and reductions.
本文提出了一种基于苝部分的多相光催化剂的机理研究。首先，成功地将苝二酰亚胺（PDI）固定在二氧化硅基质上，并通过电子显微镜、表面积测量、粉末 X 射线衍射、热重分析和傅里叶变换红外光谱、Si 和 C 固态 NMR、荧光和漫反射光谱对其进行了全面表征。然后，通过使用两种模型反应，烯烃氧化和 4-硝基苯溴化苄还原，测试了材料的光氧化还原活性，并进行了机理研究。对其光氧化还原活性的机理研究表明，它们具有用于有机氧化和还原的双重光催化活性。
