Rational and practical exfoliation of graphite using well-defined poly(3-hexylthiophene) for the preparation of conductive polymer/graphene composite

Processing and manipulation of highly conductive pristine graphene in large quantities are still major challenges in the practical application of graphene for electric device. In the present study, we report the liquid-phase exfoliation of graphite in toluene using well-defined poly(3-hexylthiophene...

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Bibliographic Details
Published in:Scientific reports 2017-01, Vol.7 (1), p.39937-39937, Article 39937
Main Authors: Iguchi, Hiroki, Higashi, Chisato, Funasaki, Yuichi, Fujita, Keisuke, Mori, Atsunori, Nakasuga, Akira, Maruyama, Tatsuo
Format: Article
Language:English
Subjects:
639/301/898
639/638/298/918/1055
Composite materials
Dispersants
Electrical conductivity
Exfoliation
Graphite
Humanities and Social Sciences
multidisciplinary
Oxidation
Polymers
Science
Science (multidisciplinary)
Toluene
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Summary:Processing and manipulation of highly conductive pristine graphene in large quantities are still major challenges in the practical application of graphene for electric device. In the present study, we report the liquid-phase exfoliation of graphite in toluene using well-defined poly(3-hexylthiophene) (P3HT) to produce a P3HT/graphene composite. We synthesize and use regioregular P3HT with controlled molecular weights as conductive dispersants for graphene. Simple ultrasonication of graphite flakes with the P3HT successfully produces single-layer and few-layer graphene sheets dispersed in toluene. The produced P3HT/graphene composite can be used as conductive graphene ink, indicating that the P3HT/graphene composite has high electrical conductivity owing to the high conductivity of P3HT and graphene. The P3HT/graphene composite also works as an oxidation-resistant and conductive film for a copper substrate, which is due to the high gas-barrier property of graphene.
ISSN:2045-2322
2045-2322
DOI:10.1038/srep39937