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Type: Journal article
Title: Controlling the growth of metal-organic frameworks using different gravitational forces
Author: Richardson, J.
Liang, K.
Lisi, F.
Björnmalm, M.
Faria, M.
Guo, J.
Falcaro, P.
Citation: European Journal of Inorganic Chemistry, 2016; 2016(27):4499-4504
Publisher: Wiley
Issue Date: 2016
ISSN: 1434-1948
Editor: Dietzel, P.
Kitagawa, H.
Statement of
Joseph J. Richardson, Kang Liang, Fabio Lisi, Mattias Bjornmalm, Matthew Faria, Junling Guo, and Paolo Falcaro
Abstract: Control over Metal-organic framework (MOF) size and morphology is interesting for both fundamental and applied science. Gravitational force (g) is generally acknowledged as an interesting parameter for controlling crystal size; however, a dedicated study on the effect of g on MOF synthesis is missing. Here, we investigate the effect of varied g (< 1, 1, 20, 50, and 100) during the crystallization of different MOFs [ZIF-8, Tb2(BDC)3 and HKUST-1] in solution. The obtained MOFs were investigated using dynamic light scattering (DLS), X-ray scattering (SAXS and WAXS), and scanning electron and optical microscopy (SEM and OM, respectively). When compared with standard g (g = 1), high g (g = 20) gave rise to the formation of smaller MOF crystals, while low g (g < 1) led to larger crystals likely due to facet-oriented crystal fusion. This demonstrates that gravity and g-force can be used to rationally control the size of different MOFs by increasing or decreasing convection (mass transfer) and sedimentation.
Keywords: Crystal growth; porous coordination polymer; biomimetics; gravitational force; microgravity
Rights: © 2016 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
DOI: 10.1002/ejic.201600338
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