Jump to main content
Jump to site search


Enhanced liquid phase exfoliation of graphene in water using an insoluble bis-pyrene stabiliser

Author affiliations

Abstract

Stabilisers, such as surfactants, polymers and polyaromatic molecules, offer an effective way to produce graphene dispersions in water by Liquid Phase Exfoliation (LPE) without degrading the properties of graphene. In particular, pyrene derivatives provide better exfoliation efficiency than traditional surfactants and polymers. A stabiliser is expected to be relatively soluble in order to disperse hydrophobic graphene in water. Here, we show that exfoliation can also be achieved with insoluble pyrene stabilisers if appropriately designed. In particular, bis-pyrene stabilisers (BPSs) functionalised with pyrrolidine provide a higher exfoliation efficiency and percentage of single layers compared to traditional pyrene derivatives under the same experimental conditions. This is attributed to the enhanced interactions between BPS and graphene, provided by the presence of two pyrene binding groups. This approach is therefore attractive not only to produce highly concentrated graphene, but also to use graphene to disperse insoluble molecules in water. The enhanced adsorption of BPS on graphene, however, is reflected in higher toxicity towards human epithelial bronchial immortalized cells, limiting the use of this material for biomedical applications.

Graphical abstract: Enhanced liquid phase exfoliation of graphene in water using an insoluble bis-pyrene stabiliser

Back to tab navigation

Supplementary files

Article information


Submitted
04 Nov 2019
Accepted
06 Dec 2019
First published
22 Sep 2020

This article is Open Access

Faraday Discuss., 2021, Advance Article
Article type
Paper

Enhanced liquid phase exfoliation of graphene in water using an insoluble bis-pyrene stabiliser

Y. Shin, X. Just-Baringo, M. Boyes, A. Panigrahi, M. Zarattini, Y. Chen, X. Liu, G. Morris, E. Prestat, K. Kostarelos, S. Vranic, I. Larrosa and C. Casiraghi, Faraday Discuss., 2021, Advance Article , DOI: 10.1039/C9FD00114J

This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material and it is not used for commercial purposes.

Reproduced material should be attributed as follows:

  • For reproduction of material from NJC:
    [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
  • For reproduction of material from PCCP:
    [Original citation] - Published by the PCCP Owner Societies.
  • For reproduction of material from PPS:
    [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
  • For reproduction of material from all other RSC journals:
    [Original citation] - Published by The Royal Society of Chemistry.

Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.


Social activity

Search articles by author

Spotlight

Advertisements