Enantioselective adsorption in homochiral metal–organic frameworks: the pore size influence

Gu, Zhengbiao; Grosjean, Sylvain; Bräse, Stefan; Wöll, Christof; Heinke, Lars

doi:10.1039/c5cc02706c

Cited by 76 publications

(69 citation statements)

References 32 publications

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“…, the diffusion coefficient. Since the SURMOF pores which are activated in argon can be considered as empty, the QCM experiments allow a straightforward quantification of the uptake amount, as demonstrated in references [34,35,36]. The ferrocene uptake is determined to be 0.11 ± 0.02 µg·cm −2 , which corresponds to roughly 3/4 ferrocene compounds per HKUST-1 unit cell.…”

Section: Resultsmentioning

confidence: 95%

Liquid- and Gas-Phase Diffusion of Ferrocene in Thin Films of Metal-Organic Frameworks

2015

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The mass transfer of the guest molecules in nanoporous host materials, in particular in metal-organic frameworks (MOFs), is among the crucial features of their applications. By using thin surface-mounted MOF films in combination with a quartz crystal microbalance (QCM), the diffusion of ferrocene vapor and of ethanolic and hexanic ferrocene solution in HKUST-1 was investigated. For the first time, liquid- and gas-phase diffusion in MOFs was compared directly in the identical sample. The diffusion coefficients are in the same order of magnitude (~10−16 m2·s−1), whereas the diffusion coefficient of ferrocene in the empty framework is roughly 3-times smaller than in the MOF which is filled with ethanol or n-hexane.

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Section: Resultsmentioning

confidence: 95%

Liquid- and Gas-Phase Diffusion of Ferrocene in Thin Films of Metal-Organic Frameworks

2015

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“…QCM enables measuring the uptake processes with rate constants ranging over many orders of magnitude . In addition, QCM in combination with homochiral SURMOFs enables the investigation of enantioselective uptake . However, different molecules cannot be distinguished by QCM; therefore, the investigation of multi‐component uptake processes using a QCM is not possible.…”

Section: Resultsmentioning

confidence: 99%

Multi‐Component Uptake of Dye Molecules by Films of Nanoporous Metal–Organic Frameworks

2017

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Nanoporous materials, such as metal-organic frameworks (MOFs), enable the separation of various molecular mixtures. Thus, detailed knowledge of multi-component diffusion properties of the guest molecules in the pores is vital. Here, UV/Vis absorption spectroscopy combined with step-by-step-synthesized MOF films with high transparency are used to measure the multi-component dye uptake and diffusion in a straightforward fashion. The time-resolved single-component, binary- and ternary-mixture uptakes of methylene blue (MB), nuclear fast red (NFR) and acid yellow 17 (AY) by MOF films of type HKUST-1 from ethanolic solutions with low dye concentrations were investigated. It was found that the diffusion of MB is approximately one order of magnitude slower than the diffusion of NFR or AY, independent of whether it is a single-component uptake or a mixture uptake.

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“…Wang et al demonstrated [71] that based on both theoretical (density functional theory (DFT) calculation) and experimental (UV-vis spectroscopy/molecular uptake measurements) data such azobenzene-containing MOFs allow for the switching of azobenzene from cis to trans conformation in solid state. [70] Copyright 2015, The Royal Society of Chemistry. Mater.…”

Section: Research Activities In Smlmentioning

confidence: 99%

Soft Matter Technology at KIT: Chemical Perspective from Nanoarchitectures to Microstructures

et al. 2019

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Bioinspiration has emerged as an important design principle in the rapidly growing field of materials science and especially its subarea, soft matter science. For example, biological cells form hierarchically organized tissues that not only are optimized and designed for durability, but also have to adapt to their external environment, undergo self‐repair, and perform many highly complex functions. Being able to create artificial soft materials that mimic those highly complex functions will enable future materials applications. Herein, soft matter technologies that are used to realize bioinspired material structures are described, and potential pathways to integrate these into a comprehensive soft matter research environment are addressed. Solutions become available because soft matter technologies are benefitting from the synergies between organic synthesis, polymer chemistry, and materials science.

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Enantioselective adsorption in homochiral metal–organic frameworks: the pore size influence

Cited by 76 publications

References 32 publications

Liquid- and Gas-Phase Diffusion of Ferrocene in Thin Films of Metal-Organic Frameworks

Liquid- and Gas-Phase Diffusion of Ferrocene in Thin Films of Metal-Organic Frameworks

Multi‐Component Uptake of Dye Molecules by Films of Nanoporous Metal–Organic Frameworks

Soft Matter Technology at KIT: Chemical Perspective from Nanoarchitectures to Microstructures

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