Topochemical conversion of an imine- into a thiazole-linked covalent organic framework enabling real structure analysis
Haase F, Troschke E, Savasci G, Banerjee T, Duppel V, Doerfler S, Grundei MMJ, Burow AM, Ochsenfeld C, Kaskel S, Lotsch BV (2018)
Publication Type: Journal article
Publication year: 2018
Journal
Book Volume: 9
Article Number: 2600
Journal Issue: 1
DOI: 10.1038/s41467-018-04979-y
Abstract
Stabilization of covalent organic frameworks (COFs) by post-synthetic locking strategies is a powerful tool to push the limits of COF utilization, which are imposed by the reversible COF linkage. Here we introduce a sulfur-assisted chemical conversion of a two-dimensional imine-linked COF into a thiazole-linked COF, with full retention of crystallinity and porosity. This post-synthetic modification entails significantly enhanced chemical and electron beam stability, enabling investigation of the real framework structure at a high level of detail. An in-depth study by electron diffraction and transmission electron microscopy reveals a myriad of previously unknown or unverified structural features such as grain boundaries and edge dislocations, which are likely generic to the in-plane structure of 2D COFs. The visualization of such real structural features is key to understand, design and control structure-property relationships in COFs, which can have major implications for adsorption, catalytic, and transport properties of such crystalline porous polymers.
Involved external institutions
Max-Planck-Institut für Festkörperforschung
Germany (DE)
Ludwig-Maximilians-Universität (LMU)
Germany (DE)
Technische Universität Dresden
Germany (DE)
Fraunhofer-Institut für Werkstoff- und Strahltechnik (IWS) / Fraunhofer Institute for Material and Beam Technology
Germany (DE)
Germany (DE)
Ludwig-Maximilians-Universität (LMU)
Germany (DE)
Technische Universität Dresden
Germany (DE)
Fraunhofer-Institut für Werkstoff- und Strahltechnik (IWS) / Fraunhofer Institute for Material and Beam Technology
Germany (DE)
How to cite
APA:
Haase, F., Troschke, E., Savasci, G., Banerjee, T., Duppel, V., Doerfler, S.,... Lotsch, B.V. (2018). Topochemical conversion of an imine- into a thiazole-linked covalent organic framework enabling real structure analysis. Nature Communications, 9(1). https://doi.org/10.1038/s41467-018-04979-y
MLA:
Haase, Frederik, et al. "Topochemical conversion of an imine- into a thiazole-linked covalent organic framework enabling real structure analysis." Nature Communications 9.1 (2018).
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