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A pore-expanded supramolecular organic framework and its en-richment of photosensitizers and catalysts for visible-induced hy-drogen production

Abstract

A pore-expanded three-dimensional supramolecular organic framework SOF-bpb, with a previously unattained aperture size of 3.6 nm, has been constructed in water from the co-assembly of cucurbit[8]uril (CB[8]) and tetraphenylmethane-cored 1,4-bis(pyridin-4-yl)-benzene-appended building block M1. The periodicity of SOF-bpb in water and in the solid state has been confirmed by synchrotron X-ray scattering and diffraction experiments. SOF-bpb can adsorb anionic and neutral Ru2+ complex photosensitizers and anionic Wells-Dawson-type and Keggin-type polyoxometalates (POMs). The adsorption leads to important enrichment effect which remarkably increases the catalytic efficiency of the Ru2+ complex-POM systems for visible light-induced reduction of protons to produce H2. The expanded aperture of SOF-bpb also facilitates the light absorption of the adsorbed Ru2+ complex photosensitizers and electron transfer between excited complexes and the POM catalysts, leading to enhanced photocatalytic activities as compared against the prototypical SOF that has an aperture size of 2.1 nm.

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Publication details

The article was received on 16 Mar 2019, accepted on 12 Apr 2019 and first published on 16 Apr 2019


Article type: Research Article
DOI: 10.1039/C9QO00382G
Citation: Org. Chem. Front., 2019, Accepted Manuscript

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    A pore-expanded supramolecular organic framework and its en-richment of photosensitizers and catalysts for visible-induced hy-drogen production

    M. Yan, X. Liu, Z. Gao, Y. Wu, J. Hou, H. Wang, D. Zhang, Y. Liu and Z. Li, Org. Chem. Front., 2019, Accepted Manuscript , DOI: 10.1039/C9QO00382G

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