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Schneemann A, Rudolf R, Baxter SJ, et al. Flexibility control in alkyl ether-functionalized pillared-layered MOFs by a Cu/Zn mixed metal approach. Dalton Trans. 2019;48(19):6564-6570doi: 10.1039/c9dt01105f.
Schneemann, A., Rudolf, R., Baxter, S. J., Vervoorts, P., Hante, I., Khaletskaya, K., Henke, S., Kieslich, G., & Fischer, R. A. (2019). Flexibility control in alkyl ether-functionalized pillared-layered MOFs by a Cu/Zn mixed metal approach. Dalton transactions (Cambridge, England : 2003), 48(19), 6564-6570. https://doi.org/10.1039/c9dt01105f
Schneemann, Andreas, et al. "Flexibility control in alkyl ether-functionalized pillared-layered MOFs by a Cu/Zn mixed metal approach." Dalton transactions (Cambridge, England : 2003) vol. 48,19 (2019): 6564-6570. doi: https://doi.org/10.1039/c9dt01105f
Schneemann A, Rudolf R, Baxter SJ, Vervoorts P, Hante I, Khaletskaya K, Henke S, Kieslich G, Fischer RA. Flexibility control in alkyl ether-functionalized pillared-layered MOFs by a Cu/Zn mixed metal approach. Dalton Trans. 2019 May 15;48(19):6564-6570. doi: 10.1039/c9dt01105f. PMID: 31012889.
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Dalton Trans. 2019 May 15;48(19):6564-6570. doi: 10.1039/c9dt01105f.

Flexibility control in alkyl ether-functionalized pillared-layered MOFs by a Cu/Zn mixed metal approach.

Dalton transactions (Cambridge, England : 2003)

Andreas Schneemann, Robin Rudolf, Samuel J Baxter, Pia Vervoorts, Inke Hante, Kira Khaletskaya, Sebastian Henke, Gregor Kieslich, Roland A Fischer

Affiliations

  1. Department of Chemistry, Technische Universität München, Lichtenbergstrasse 4, D-85748 Garching, Germany and Catalysis Research Centre, Technische Universität München, Ernst-Otto-Fischer Straße 1, 85748 Garching, Germany.

PMID: 31012889 DOI: 10.1039/c9dt01105f

Abstract

Flexible metal-organic frameworks (MOFs) exhibit large potential as next-generation materials in areas such as gas sensing, gas separation and mechanical damping. By using a mixed metal approach, we report how the stimuli reponsive phase transition of flexible pillared-layered MOFs can be tuned over a wide range. Different Cu2+ to Zn2+ metal ratios are incorporated into the materials by using a simple solvothermal approach. The properties of the obtained materials are probed by differential scanning calorimetry and CO2 sorption measurements, revealing stimuli responsive behaviour as a function of metal ratio. Pair distribution functions derived from X-ray total scattering experiments suggest a distortion of the M2 paddlewheel as a function of the Cu content. We rationalize these phenomena by the different distortion energies of Cu2+ and Zn2+ ions to deviate from the square pyramidal structure of the relaxed paddlewheel node. Our work follows on from the large interest in tuning and understanding the materials properties of flexible MOFs, highlighting the large number of parameters that can be used for the targeted manipulation and design of properties of these fascinating materials.

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