Article Dans Une Revue Journal of the American Chemical Society Année : 2005

Very Large Swelling in Hybrid Frameworks: A Combined Computational and Powder Diffraction Study

Résumé

Using a combination of simulations and powder diffraction, we report here the study of the very large swelling of a three-dimensional nanoporous iron(III) carboxylate (MIL-88) which exhibits almost a reversible doubling (∼85%) of its cell volume while fully retaining its open-framework topology. The crystal structure of the open form of MIL-88 has been successfully refined and indicates that atomic displacements larger than 4 Å are observed when water or various alcohols are adsorbed in the porous structure, revealing an unusually flexible crystallized framework. X-ray thermodiffractometry shows that only a displacive transition occurs during the swelling phenomenon, ruling out any bond breaking.

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Dates et versions

hal-02439578 , version 1 (14-01-2020)

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Caroline Mellot-Draznieks, Christian Serre, Suzy Surblé, Nathalie Audebrand, Gerard Ferey. Very Large Swelling in Hybrid Frameworks: A Combined Computational and Powder Diffraction Study. Journal of the American Chemical Society, 2005, 127 (46), pp.16273-16278. ⟨10.1021/ja054900x⟩. ⟨hal-02439578⟩
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