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Robust porous organic polymers as efficient heterogeneous organo-photocatalysts for aerobic oxidation reactions

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Abstract

Metal-free, visible-light active and heterogeneous organic photocatalysts offer a more sustainable and environmentally friendly alternative to traditional metal-based catalysts. Here a porous organic hyper-crosslinked polymer, CF-HCP, was successfully synthesized through a facile and cost-effective process. The chemical and structural properties of CF-HCP were fully characterized by using powder X-ray diffraction analysis, Fourier transform infrared spectroscopy, 13C solid-state NMR spectroscopy, electron microscopy, thermogravimetric analysis, X-ray photoelectron spectroscopy and nitrogen adsorption. The new three-dimensional hyper-crosslinked network possesses a high Brunauer–Emmett–Teller (BET) specific surface area up to 1200 m2 g−1 with a pore volume of 0.92 cm3 g−1, and exhibits good thermal, chemical and photochemical stability. Importantly, CF-HCP was found to be a highly effective heterogeneous photocatalyst for a wide range of organic reactions, including the oxidative coupling of primary amines, dehydrogenation of nonactive secondary amine substrates, and selective oxidation of sulfide under visible-light irradiation and using molecular oxygen as a clean oxidant. In particular, mild reaction conditions, ease of product separation by simple filtration, significant recyclability and low cost make this network material an economical and eco-friendly catalyst for the preparation of versatile organic compounds.

Graphical abstract: Robust porous organic polymers as efficient heterogeneous organo-photocatalysts for aerobic oxidation reactions

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Publication details

The article was received on 12 Mar 2017, accepted on 09 Apr 2017 and first published on 10 Apr 2017


Article type: Paper
DOI: 10.1039/C7TA02205K
Citation: J. Mater. Chem. A, 2017, Advance Article
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    Robust porous organic polymers as efficient heterogeneous organo-photocatalysts for aerobic oxidation reactions

    Y. Zhi, K. Li, H. Xia, M. Xue, Y. Mu and X. Liu, J. Mater. Chem. A, 2017, Advance Article , DOI: 10.1039/C7TA02205K

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