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Showing 1–7 of 7 results
Advanced filters: Author: "Stefan Kaskel" Clear advanced filters

  • For adsorption processes, gas uptake usually increases with increasing pressure; however, here the phenomenon of negative gas adsorption is demonstrated in a metal–organic framework, which undergoes a sudden hysteretic structural deformation and pore contraction, releasing guest molecules.

    • Simon Krause
    • Volodymyr Bon
    • Stefan Kaskel
    Research
    Nature
    Volume: 532, P: 348-352

  • Switchable porous materials offer adaptive voids mutating in size and shape in response to molecular stimuli. Here authors use PFG NMR to reveal the decisive role of metastable states leading to counterintuitive negative gas adsorption transitions in responsive MOFs.

    • Francesco Walenszus
    • Volodymyr Bon
    • Muslim Dvoyashkin
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-10

  • The application of photoswitches as light-responsive triggers for phase transitions of porous materials remains poorly explored. Here, the authors report a light-responsive flexible metal-organic framework which undergoes pore contraction upon combined application of light irradiation and adsorption stress via a buckling process of the framework-embedded azobenzene photoswitch.

    • Simon Krause
    • Jack D. Evans
    • Ben L. Feringa
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-10

  • Pressure amplification phenomena have recently been observed in ordered mesoporous solids, but little is understood about this counter-intuitive behaviour. Here, Kaskel and colleagues demonstrate that crystal size can play an important role in modulating pressure amplification in metal-organic frameworks.

    • Simon Krause
    • Volodymyr Bon
    • Stefan Kaskel
    ResearchOpen Access
    Nature Communications
    Volume: 9, P: 1-8

  • Porous framework material DUT-49 was recently demonstrated to exhibit a unique counterintuitive negative gas adsorption (NGA) behaviour. Here the authors identify framework DUT-50 as an additional pressure amplifying material that features distinct NGA transitions, and suggest structural design criteria to access other such materials.

    • Simon Krause
    • Jack D. Evans
    • Stefan Kaskel
    ResearchOpen Access
    Nature Communications
    Volume: 10, P: 1-12

  • Some flexible metal–organic frameworks are known to exhibit an adaptive behaviour as they convert between two stable forms in response to their environment. Now, a metal–organic framework based on nonlinear linkers has been shown to adopt a much more complex family of degenerate disordered configurations, which can be reversibly interconverted through guest exchange.

    • S. Ehrling
    • E. M. Reynolds
    • S. Kaskel
    Research
    Nature Chemistry
    Volume: 13, P: 568-574

  • As the field of metal-organic frameworks is maturing, understanding the dynamics of open frameworks is progressing and rational approaches are under development. Here, the authors outline challenges and potential routes to engineering the spatio-temporal evolution of dynamic metal-organic frameworks.

    • Jack D. Evans
    • Volodymyr Bon
    • Stefan Kaskel
    ReviewsOpen Access
    Nature Communications
    Volume: 11, P: 1-11