Tuning the high-pressure phase behaviour of highly compressible zeolitic imidazolate frameworks: from discontinuous to continuous pore closure by linker substitution

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dc.contributor.authorSong, Jianbo
dc.contributor.authorPallach, Roman
dc.contributor.authorFrentzel-Beyme, Louis
dc.contributor.authorKolodzeiski, Pascal
dc.contributor.authorKieslich, Gregor
dc.contributor.authorVervoorts, Pia
dc.contributor.authorHobday, Claire L.
dc.contributor.authorHenke, Sebastian
dc.date.accessioned2024-03-06T12:48:02Z
dc.date.available2024-03-06T12:48:02Z
dc.date.issued2022-02-04
dc.description.abstractThe high-pressure behaviour of flexible zeolitic imidazolate frameworks (ZIFs) of the ZIF-62 family with the chemical composition M(im)2−x(bim)x is presented (M2+=Zn2+, Co2+; im−=imidazolate; bim−=benzimidazolate, 0.02≤x≤0.37). High-pressure powder X-ray diffraction shows that the materials contract reversibly from an open pore (op) to a closed pore (cp) phase under a hydrostatic pressure of up to 4000 bar. Sequentially increasing the bim− fraction (x) reinforces the framework, leading to an increased threshold pressure for the op-to-cp phase transition, while the total volume contraction across the transition decreases. Most importantly, the typical discontinuous op-to-cp transition (first order) changes to an unusual continuous transition (second order) for x≥0.35. This allows finetuning of the void volume and the pore size of the material continuously by adjusting the pressure, thus opening new possibilities for MOFs in pressure-switchable devices, membranes, and actuators.en
dc.identifier.urihttp://hdl.handle.net/2003/42380
dc.identifier.urihttp://dx.doi.org/10.17877/DE290R-24216
dc.language.isoende
dc.relation.ispartofseriesAngewandte Chemie / International edition;61(21)
dc.rights.urihttps://creativecommons.org/licenses/by-nc/4.0/de
dc.subjectHigh-pressure crystallographyen
dc.subjectMechanical propertiesen
dc.subjectMetal-organic frameworksen
dc.subjectPhase transitionen
dc.subjectResponsive materialsen
dc.subject.ddc540
dc.titleTuning the high-pressure phase behaviour of highly compressible zeolitic imidazolate frameworks: from discontinuous to continuous pore closure by linker substitutionen
dc.typeTextde
dc.type.publicationtypeResearchArticlede
dcterms.accessRightsopen access
eldorado.secondarypublicationtruede
eldorado.secondarypublication.primarycitationJ. Song, R. Pallach, L. Frentzel-Beyme, P. Kolodzeiski, G. Kieslich, P. Vervoorts, C. L. Hobday, S. Henke, Angew. Chem. Int. Ed. 2022, 61, e202117565; Angew. Chem. 2022, 134, e202117565.de
eldorado.secondarypublication.primaryidentifierhttps://doi.org/10.1002/anie.202117565de

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