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Opening the Gate: Framework Flexibility in ZIF-8 Explored by Experiments and Simulations
Open accessAbstract
ZIF-8 is a zeolitic imidazole-based metal-organic framework with large cavities interconnected by narrow windows. Because the small size of the windows, it allows in principle for molecular sieving of gases such as H(2) and CH(4). However, the unexpected adsorption of large molecules on ZIF-8 suggests the existence of structural flexibility. ZIF-8 flexibility is explored in this work combining different experimental techniques with molecular simulation. We show that the ZIF-8 structure is modified by gas adsorption uptake in the same way as it is at a very high pressure (i.e., 14,700 bar) due to a swing effect in the imidazolate linkers, giving access to the porosity. Tuning the flexibility, and so the opening of the small windows, has a further impact on the design of advanced molecular sieving membrane materials for gas separation, adjusting the access of fluids to the porous network.
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Citations
Cited by
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Polymer Networks: From Plastics and Gels to Porous Frameworks
Gu, Y., Zhao, J., & Johnson, J. A. (2020) · Angewandte Chemie International Edition · doi:10.1002/anie.201902900 · Cited by 388
Liu, X., Li, Y., Zhu, G., Ban, Y., Xu, L., & Yang, W. (2011) · Angewandte Chemie International Edition · doi:10.1002/anie.201104383 · Cited by 355
Metadata
- Authors
- Fairen-Jimenez, D., Moggach, S. A., Wharmby, M. T., Wright, P. A., Parsons, S., & Düren, T.
- Venue
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Published
- 2011-05-19
- Volume
- 133
- Issue
- 23
- Pages
- 8900-8902
- ISSN
- 0002-7863 (ISSN-L)
- 1520-5126
- OpenAlex
- W2316124489
- Cited by
- 1,211
- References
- 0
- FWCI
- 30.29
- Type
- journal article
- Language
- en
- Open access
- green
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- Fairen-Jimenez, D., Moggach, S. A., Wharmby, M. T., Wright, P. A., Parsons, S., & Düren, T. (2011). Opening the Gate: Framework Flexibility in ZIF-8 Explored by Experiments and Simulations. Journal of the American Chemical Society. https://doi.org/10.1021/ja202154j
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