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Photoswitching storage of guest molecules in metal–organic framework for photoswitchable catalysis: exceptional product, ultrahigh photocontrol, and photomodulated size selectivity

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Abstract

MOF materials, as new catalysts, show high catalytic activity and size-, regio-, and stereo-selectivity. However, artificially controlling their catalytic process by convenient external stimulus such as light is still unexploited. Such photocontrol over an organic reaction may enable switchable catalytic activities and/or selectivities, consequently producing desired products from a pool of building blocks according to the order and type of stimuli applied. In this study, we present a novel MOF catalyst, which not only offers ultrahigh photocontrol with the on/off ratio as high as 407, but also displays disparate photomodulation in reaction kinetics towards various aldehyde substrates in light of their sizes, thus creating the first example of MOFs showing photoswitchable catalysis. The origin, as unveiled by photoswitching adsorption experiments and density functional theory calculations, is due to photoswitching storage of guest molecules in the metal–organic framework (MOF).

Graphical abstract: Photoswitching storage of guest molecules in metal–organic framework for photoswitchable catalysis: exceptional product, ultrahigh photocontrol, and photomodulated size selectivity

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Publication details

The article was received on 14 Feb 2017, accepted on 24 Mar 2017 and first published on 28 Mar 2017


Article type: Paper
DOI: 10.1039/C7TA01388D
Citation: J. Mater. Chem. A, 2017, Advance Article
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    Photoswitching storage of guest molecules in metal–organic framework for photoswitchable catalysis: exceptional product, ultrahigh photocontrol, and photomodulated size selectivity

    L. L. Gong, W. T. Yao, Z. Q. Liu, A. M. Zheng, J. Q. Li, X. F. Feng, L. F. Ma, C. S. Yan, M. B. Luo and F. Luo, J. Mater. Chem. A, 2017, Advance Article , DOI: 10.1039/C7TA01388D

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