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Issue 26, 2016
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Observation of single-file diffusion in a MOF

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Abstract

The translational and rotational dynamics of neopentane adsorbed in the one-dimensional channels of MIL-47(V) has been studied by quasi-elastic neutron scattering. The rotational motion of neopentane is well-described by the rotational diffusion model, with a correlation time of 41 ps at 300 K. The translational motion of the molecule has been fitted by several models: isotropic diffusion, normal 1D and single-file diffusion. It is found that the observed line shapes can only be reproduced by the single-file diffusion model. The single-file mobility factor, F, is (8 ± 1) × 10−14 m2 s−1/2 at 300 K. This is the first observation of this unusual diffusion behaviour in a MOF.

Graphical abstract: Observation of single-file diffusion in a MOF

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Article information


Submitted
19 Jan 2016
Accepted
19 Feb 2016
First published
19 Feb 2016

Phys. Chem. Chem. Phys., 2016,18, 17190-17195
Article type
Paper

Observation of single-file diffusion in a MOF

H. Jobic, Phys. Chem. Chem. Phys., 2016, 18, 17190
DOI: 10.1039/C6CP00410E

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