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Covalent Organic Framework (COF-1) under High Pressure
Umeå University, Faculty of Science and Technology, Department of Physics. Department of Industrial and Materials Science, Chalmers Tekniska Högskola 41296 Göteborg (Sweden).
Umeå University, Faculty of Science and Technology, Department of Physics.ORCID iD: 0000-0002-1535-9476
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2020 (English)In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 59, no 3, p. 1087-1092Article in journal (Refereed) Published
Abstract [en]

COF‐1 has a structure with rigid 2D layers composed of benzene and B3O3 rings and weak van der Waals bonding between the layers. The as‐synthesized COF‐1 structure contains pores occupied by solvent molecules. A high surface area empty‐pore structure is obtained after vacuum annealing. High‐pressure XRD and Raman experiments with mesitylene‐filled (COF‐1‐M) and empty‐pore COF‐1 demonstrate partial amorphization and collapse of the framework structure above 12–15 GPa. The ambient pressure structure of COF‐1‐M can be reversibly recovered after compression up to 10–15 GPa. Remarkable stability of highly porous COF‐1 structure at pressures at least up to 10 GPa is found even for the empty‐pore structure. The bulk modulus of the COF‐1 structure (11.2(5) GPa) and linear incompressibilities (k[100]=111(5) GPa, k[001]=15.0(5) GPa) were evaluated from the analysis of XRD data and cross‐checked against first‐principles calculations.

Place, publisher, year, edition, pages
Wiley-VCH Verlagsgesellschaft, 2020. Vol. 59, no 3, p. 1087-1092
Keywords [en]
2D materials, DFT calculations, high pressure, Raman spectroscopy, XRD
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:umu:diva-166812DOI: 10.1002/anie.201907689ISI: 000500193500001PubMedID: 31553513OAI: oai:DiVA.org:umu-166812DiVA, id: diva2:1382520
Funder
Swedish Research Council, 2017-04173The Kempe FoundationsEU, Horizon 2020, 730872Available from: 2020-01-03 Created: 2020-01-03 Last updated: 2020-03-05Bibliographically approved

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Sun, JinhuaIakunkov, ArtemPalermo, VincenzoTalyzin, Aleksandr V.
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