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

ChemSusChem (2015-09-10)
Zi Jun Wang, Kim Garth, Saman Ghasimi, Katharina Landfester, Kai A I Zhang
RESUMEN

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.

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Sigma-Aldrich
Benzylamine, ReagentPlus®, 99%
Sigma-Aldrich
4,7-Dibromobenzo[c]-1,2,5-thiadiazole, 95%
Sigma-Aldrich
1,3,5-Triethynylbenzene, 97%
Sigma-Aldrich
Benzylamine, purified by redistillation, ≥99.5%
Sigma-Aldrich
4,7-Dibromobenzo[c]-1,2,5-thiadiazole, 99.5% (GC)

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