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Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/49850
Title: Synthesis of sulfonated graphene/polyaniline composites with improved electroactivity
Authors: Cokun, E.; Zaragoza-Contreras, E.A.; Salavagione, Horacio J.
Issue Date: 2012
Publisher: Pergamon Press
Citation: Carbon 50: 2235-2243 (2012)
Abstract: The sulfonation of graphene by coupling with the diazonium salts of sulfanilic (SA) acid and amino-4-hydroxy-2-naphthalenesulfonic (NSA) acid is studied. Coupling with the diazonium salt of NSA gives the highest degree of sulfonation. Composites of polyaniline (PANI) and sulfonated graphene (SG) are prepared by the polymerization of aniline in the presence of the SG. The materials have been characterized by Raman, Fourier transformed infrared spectroscopy, thermogravimetric analysis and cyclic voltammetry. These materials are electrochemically active at pHs close to physiological pH due to the doping of PANI with the sulfonic groups in SG trapped in the polymer. Furthermore, good conductivity values are obtained. © 2011 Elsevier Ltd. All rights reserved.
URI: http://hdl.handle.net/10261/49850
DOI: 10.1016/j.carbon.2012.01.041
Identifiers: doi: 10.1016/j.carbon.2012.01.041
issn: 0008-6223
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