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Updated: Jul 14, 2026

Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes
Published on: August 16, 2018
Intracrystalline diffusivities and surface permeabilities deduced from transient concentration profiles: methanol in
Pavel V Kortunov1, Lars Heinke, Mirko Arnold
1Universität Leipzig, Linnéstr. 5, 04103 Leipzig, Germany.
Abstract:
The intracrystalline concentration profiles during molecular uptake of methanol by an initially empty, single crystal of microporous manganese(II) formate (Mn(HCO2)2), representing an ionic inorganic-organic hybrid within the MOF family, are monitored by interference microscopy. Within these profiles, a crystal section could be detected where over the total of its extension ( approximately 2 microm x 50 microm x 30 microm) molecular uptake ideally followed the pattern of one-dimensional diffusion. Analysis of the evolution of intracrystalline concentration in this section directly yields the permeability of the crystal surface and the intracrystalline diffusivity as a function of the concentration of the total range of 0
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