The mechanochemical Scholl reaction - a solvent-free and versatile graphitization tool

Herein, we report on the mechanochemical Scholl reaction of dendritic oligophenylene precursors to produce benchmark nanographenes such as hexa- peri -hexabenzocoronene (HBC), triangular shaped C 60 and expanded C 222 under solvent-free conditions. The solvent-free approach overcomes the bottleneck...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2018, Vol.54 (42), p.537-531
Main Authors: Grätz, Sven, Beyer, Doreen, Tkachova, Valeriya, Hellmann, Sarah, Berger, Reinhard, Feng, Xinliang, Borchardt, Lars
Format: Article
Language:English
Subjects:
Buckminsterfullerene
Fullerenes
Graphitization
Mass spectrometry
Solvents
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Summary:Herein, we report on the mechanochemical Scholl reaction of dendritic oligophenylene precursors to produce benchmark nanographenes such as hexa- peri -hexabenzocoronene (HBC), triangular shaped C 60 and expanded C 222 under solvent-free conditions. The solvent-free approach overcomes the bottleneck of solubility limitation in this well-known and powerful reaction. The mechanochemical approach allows tracking the reaction process by in situ pressure measurements. The quality of produced nanographenes has been confirmed by MALDI-TOF mass spectrometry and UV-Vis absorption spectroscopy. This approach paves the way towards gram scale and environmentally benign synthesis of extended nanographenes and possibly graphene nanoribbons suitable for application in carbon based electronics or energy applications. Ball milling was applied to a Scholl reaction of dendritic oligophenylene precursors to produce benchmark nanographenes under solvent-free conditions.
ISSN:1359-7345
1364-548X
DOI:10.1039/c8cc01993b