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Observation of Interpenetration Isomerism in Covalent Organic Frameworks
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Number of Authors: 122018 (English)In: Journal of the American Chemical Society, ISSN 0002-7863, E-ISSN 1520-5126, Vol. 140, no 22, p. 6763-6766Article in journal (Refereed) Published
Abstract [en]

We report herein the first example of interpenetration isomerism in covalent organic frameworks (COFs). As a well-known three-dimensional (3D) COF, COF-300 was synthesized and characterized by the Yaghi group in 2009 as a 5-fold interpenetrated diamond structure (dia-cS topology). We found that adding an aging process prior to the reported synthetic procedure afforded the formation of an interpenetration isomer, dia-c7 COF-300. The 7-fold interpenetrated diamond structure of this new isomer was identified by powder Xray diffraction and rotation electron diffraction analyses. Furthermore, we proposed a universal formula to accurately determine the number of interpenetration degrees of dia-based COFs from only the unit cell parameters and the length of the organic linker. This work not only provides a novel example to the category of interpenetration isomerism but also provides new insights for the further development of 3D COFs.

Place, publisher, year, edition, pages
2018. Vol. 140, no 22, p. 6763-6766
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Chemical Sciences
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URN: urn:nbn:se:su:diva-158274DOI: 10.1021/jacs.8b03169ISI: 000434895200007PubMedID: 29779370OAI: oai:DiVA.org:su-158274DiVA, id: diva2:1236602
Available from: 2018-08-03 Created: 2018-08-03 Last updated: 2018-08-03Bibliographically approved

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Etman, Ahmed S.Sun, Junliang
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Department of Materials and Environmental Chemistry (MMK)
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