Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Water Dispersible Few Layer Graphene Stabilized by a Novel Pyrene Derivative at Micromolar Concentration

Eunice Cunha
ORCID logo ,
Maria Fernanda Proença
,
Maria Goreti Pereira
,
Maria José Fernandes
,
Robert Young
,
Karol Strutyński
,
Manuel Melle-Franco
,
Mariam Gonzales-Debs
,
Paulo Lopes
,
Maria da Conceição Paiva
* ORCID logo
Version 1 : Received: 2 August 2018 / Approved: 2 August 2018 / Online: 2 August 2018 (23:52:47 CEST)

A peer-reviewed article of this Preprint also exists.

Cunha, E.; Proença, M.F.; Pereira, M.G.; Fernandes, M.J.; Young, R.J.; Strutyński, K.; Melle-Franco, M.; Gonzalez-Debs, M.; Lopes, P.E.; Paiva, M.C. Water Dispersible Few-Layer Graphene Stabilized by a Novel Pyrene Derivative at Micromolar Concentration. Nanomaterials 2018, 8, 675. Cunha, E.; Proença, M.F.; Pereira, M.G.; Fernandes, M.J.; Young, R.J.; Strutyński, K.; Melle-Franco, M.; Gonzalez-Debs, M.; Lopes, P.E.; Paiva, M.C. Water Dispersible Few-Layer Graphene Stabilized by a Novel Pyrene Derivative at Micromolar Concentration. Nanomaterials 2018, 8, 675.

Abstract

The search for graphene or few layer graphene production methods that are simple, allow mass production and yield good quality material continues to provoke intense investigation. The present work contributes through the study of the aqueous exfoliation of four types of graphene sources, namely graphite and graphite nanoflakes with different morphologies and geographical origin. The exfoliation was achieved in an aqueous solution of a soluble pyrene derivative that was synthesized to achieve maximum interaction with the graphene surface at low concentration (5 x 10-5 M). The yield of bilayer and few layer graphene obtained was quantified by Raman spectroscopic analysis and the adsorption of the pyrene derivative on the graphene surface was studied by thermogravimetric analysis and X-ray diffraction. The whole procedure was rationalized with the help of molecular modeling.

Keywords

few layer graphene production; aqueous suspension; pyrene derivative; molecular modelling

Subject

Chemistry and Materials Science, Nanotechnology

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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