Harnessing the Liquid-Phase Exfoliation of Graphene Using Aliphatic Compounds: A Supramolecular Approach

The technological exploitation of the extraordinary properties of graphene relies on the ability to achieve full control over the production of a high‐quality material and its processing by up‐scalable approaches in order to fabricate large‐area films with single‐layer or a few atomic‐layer thicknes...

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Bibliographic Details
Published in:Angewandte Chemie 2014-09, Vol.126 (39), p.10523-10529
Main Authors: Ciesielski, Artur, Haar, Sébastien, El Gemayel, Mirella, Yang, Huafeng, Clough, Joseph, Melinte, Georgian, Gobbi, Marco, Orgiu, Emanuele, Nardi, Marco V., Ligorio, Giovanni, Palermo, Vincenzo, Koch, Norbert, Ersen, Ovidiu, Casiraghi, Cinzia, Samorì, Paolo
Format: Article
Language:eng ; ger
Subjects:
Aliphatic compounds
Chemistry
Conduction
Devices
Dispersions
Electrodes
Electronics
Elektroaktive Materialien
Exfoliation
Graphen
Graphene
Nanostructure
Supramolekulare Chemie
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Summary:The technological exploitation of the extraordinary properties of graphene relies on the ability to achieve full control over the production of a high‐quality material and its processing by up‐scalable approaches in order to fabricate large‐area films with single‐layer or a few atomic‐layer thickness, which might be integrated in working devices. A simple method is reported for producing homogenous dispersions of unfunctionalized and non‐oxidized graphene nanosheets in N‐methyl‐2‐pyrrolidone (NMP) by using simple molecular modules, which act as dispersion‐stabilizing compounds during the liquid‐phase exfoliation (LPE) process, leading to an increase in the concentration of graphene in dispersions. The LPE‐processed graphene dispersion was shown to be a conductive ink. This approach opens up new avenues for the technological applications of this graphene ink as low‐cost electrodes and conducting nanocomposite for electronics. Graphendispersionen: Eine einfache Methode wird vorgestellt, mit der homogene Dispersionen unfunktionalisierter und nicht‐oxidierter Graphennanoblätter in 1‐Methyl‐2‐pyrrolidon hergestellt werden können (siehe Bild). Einfache molekulare Bausteine werden als dispersionsstabilisierende Verbindungen während des Abblätterungsprozesses in der flüssigen Phase verwendet und führen zu einer Zunahme der Konzentration der Graphendispersionen.
ISSN:0044-8249
1521-3757
DOI:10.1002/ange.201402696