Chemsuschem Chemistry And Sustainability, Energy & Materials 2015-10-26

Conjugated Microporous Poly(Benzochalcogenadiazole)s for Photocatalytic Oxidative Coupling of Amines under Visible Light.

Zi Jun Wang, Kim Garth, Saman Ghasimi, Katharina Landfester, Kai A I Zhang

Index: ChemSusChem 8 , 3459-64, (2015)

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Abstract

Metal-free visible-light photocatalysts offer a clean, sustainable solution to many pressing environmental issues. Herein, we present a molecular design strategy to fine-tune the valence and conduction band levels of a series of conjugated microporous polymer networks based on poly(benzochalcogenadiazole) for heterogeneous photocatalysis. Enhanced photocatalytic efficiency was observed by altering the chalcogene moieties in the electron-accepting benzochalcogenadiazole unit of the polymer backbone structure. Photooxidative coupling of benzylamines was chosen as a model reaction. This design strategy leading to enhanced efficiency could potentially improve a wide range of photoredox reactions. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.