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Isostructural Three-Dimensional Covalent Organic Frameworks
Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för material- och miljökemi (MMK). Peking University, China.
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Antal upphovsmän: 82019 (Engelska)Ingår i: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 58, nr 29, s. 9770-9775Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Herein, we reported the designed synthesis of three isostructural three-dimensional covalent organic frameworks (3D COFs) with -H, -Me, or -F substituents, which have similar crystallinity and topology. Their crystal structures were determined by continuous rotation electron diffraction (cRED), and all three 3D COFs were found to adopt a fivefold interpenetrated pts topology. More importantly, the resolution of these cRED datasets reached up to 0.9-1.0 angstrom, enabling the localization of all non-hydrogen atomic positions in a COF framework directly by 3D ED techniques for the first time. In addition, the precise control of the pore environments through the use of different functional groups led to different selectivities for CO2 over N-2. We have thus confirmed that polycrystalline COFs can be definitely studied to the atomic level as other materials, and this study should also inspire the design and synthesis of 3D COFs with tailored pore environments for interesting applications.

Ort, förlag, år, upplaga, sidor
2019. Vol. 58, nr 29, s. 9770-9775
Nyckelord [en]
covalent organic 3D frameworks, continuous rotation electron diffraction, gas separation, structure elucidation
Nationell ämneskategori
Kemi
Identifikatorer
URN: urn:nbn:se:su:diva-171731DOI: 10.1002/anie.201905591ISI: 000476615900008PubMedID: 31106938OAI: oai:DiVA.org:su-171731DiVA, id: diva2:1349971
Tillgänglig från: 2019-09-10 Skapad: 2019-09-10 Senast uppdaterad: 2019-09-10Bibliografiskt granskad

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Li, JianSun, Junliang
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Institutionen för material- och miljökemi (MMK)
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Angewandte Chemie International Edition
Kemi

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