Water Dispersible Few-Layer Graphene Stabilized by a Novel Pyrene Derivative at Micromolar Concentration
authors Cunha, E; Proenca, MF; Pereira, MG; Fernandes, MJ; Young, RJ; Strutynski, K; Melle-Franco, M; Gonzalez-Debs, M; Lopes, PE; Paiva, MD
nationality International
journal NANOMATERIALS
author keywords few layer graphene; pyrene derivative; aqueous suspension; molecular modelling
keywords LIQUID-PHASE EXFOLIATION; FUNCTIONALIZED GRAPHENE; GRAPHITE; COMPOSITES; SHEETS; OXIDE; NANOCOMPOSITES; MECHANICS; MOLECULES; CARBON
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 to this investigation through the study of the aqueous exfoliation of four types of graphene sources, which are namely graphite and graphite nanoflakes with different morphologies and geographical origins. 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.
publisher MDPI
issn 2079-4991
year published 2018
volume 8
issue 9
digital object identifier (doi) 10.3390/nano8090675
web of science category Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
subject category Science & Technology - Other Topics; Materials Science
unique article identifier WOS:000448659200043
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journal analysis (jcr 2017):
journal impact factor 3.504
5 year journal impact factor 3.811
category normalized journal impact factor percentile 66.708
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