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A Molecular Pillar Approach To Grow Vertical Covalent Organic Framework Nanosheets on Graphene: Hybrid Materials for Energy Storage
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Institutionen för fysik.
Umeå universitet, Teknisk-naturvetenskapliga fakulteten, Institutionen för fysik.
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2018 (engelsk)Inngår i: Angewandte Chemie International Edition, ISSN 1433-7851, E-ISSN 1521-3773, Vol. 57, nr 4, s. 1034-1038Artikkel i tidsskrift (Fagfellevurdert) 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.

sted, utgiver, år, opplag, sider
John Wiley & Sons, 2018. Vol. 57, nr 4, s. 1034-1038
HSV kategori
Forskningsprogram
nanomaterial
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URN: urn:nbn:se:umu:diva-145739DOI: 10.1002/anie.201710502ISI: 000428208700030PubMedID: 29210484OAI: oai:DiVA.org:umu-145739DiVA, id: diva2:1191014
Tilgjengelig fra: 2018-03-16 Laget: 2018-03-16 Sist oppdatert: 2018-06-09bibliografisk kontrollert

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