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A Molecular Pillar Approach To Grow Vertical Covalent Organic Framework Nanosheets on Graphene: Hybrid Materials for Energy Storage
Umeå University, Faculty of Science and Technology, Department of Physics.
Umeå University, Faculty of Science and Technology, Department of Physics.
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2018 (English)In: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 57, no 4, p. 1034-1038Article in journal (Refereed) Published
Abstract [en]

Hybrid 2D–2D materials composed of perpendicularly oriented covalent organic frameworks (COFs) and graphene were prepared and tested for energy storage applications. Diboronic acid molecules covalently attached to graphene oxide (GO) were used as nucleation sites for directing vertical growth of COF-1 nanosheets (v-COF-GO). The hybrid material has a forest of COF-1 nanosheets with a thickness of 3 to 15 nm in edge-on orientation relative to GO. The reaction performed without molecular pillars resulted in uncontrollable growth of thick COF-1 platelets parallel to the surface of GO. The v-COF-GO was converted into a conductive carbon material preserving the nanostructure of precursor with ultrathin porous carbon nanosheets grafted to graphene in edge-on orientation. It was demonstrated as a high-performance electrode material for supercapacitors. The molecular pillar approach can be used for preparation of many other 2D-2D materials with control of their relative orientation.

Place, publisher, year, edition, pages
John Wiley & Sons, 2018. Vol. 57, no 4, p. 1034-1038
National Category
Condensed Matter Physics
Research subject
nanomaterials
Identifiers
URN: urn:nbn:se:umu:diva-145739DOI: 10.1002/anie.201710502ISI: 000428208700030PubMedID: 29210484OAI: oai:DiVA.org:umu-145739DiVA, id: diva2:1191014
Available from: 2018-03-16 Created: 2018-03-16 Last updated: 2018-06-09Bibliographically approved

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The full text will be freely available from 2019-01-22 00:00
Available from 2019-01-22 00:00

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Sun, JinhuaKlechikov, AlexeyTalyzin, Alexandr

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CiteExportLink to record
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Citation style
  • apa
  • ieee
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  • de-DE
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