Dispersion behaviour of graphene oxide and reduced graphene oxide

Dimitrios Konios; Minas M Stylianakis; Emmanuel Stratakis; Emmanuel Kymakis

doi:10.1016/j.jcis.2014.05.033

Dispersion behaviour of graphene oxide and reduced graphene oxide

J Colloid Interface Sci. 2014 Sep 15:430:108-12. doi: 10.1016/j.jcis.2014.05.033. Epub 2014 Jun 2.

Authors

Dimitrios Konios¹, Minas M Stylianakis¹, Emmanuel Stratakis², Emmanuel Kymakis³

Affiliations

¹ Center of Materials Technology and Photonics & Electrical Engineering Department, School of Engineering, Technological Educational Institute (TEI) of Crete, Heraklion 71004, Crete, Greece; Department of Chemistry, University of Crete, P.O. Box 2208, Heraklion 71003, Crete, Greece.
² Institute of Electronic Structure and Laser (IESL), Foundation for Research and Technology-Hellas (FORTH), Heraklion 71110, Crete, Greece.
³ Center of Materials Technology and Photonics & Electrical Engineering Department, School of Engineering, Technological Educational Institute (TEI) of Crete, Heraklion 71004, Crete, Greece. Electronic address: kymakis@staff.teicrete.gr.

PMID: 24998061
DOI: 10.1016/j.jcis.2014.05.033

Abstract

The dispersion behaviour of graphene oxide (GO) and chemically reduced GO (rGO) has been investigated in a wide range of organic solvents. The effect of the reduction process on the GO solubility in eighteen different solvents was examined and analysed, taking into consideration the solvent polarity, the surface tension and the Hansen and Hildebrand solubility parameters. rGO concentrations up to ∼9 μg/mL in chlorinated solvents were achieved, demonstrating an efficient solubilization strategy, extending the scope for scalable liquid-phase processing of conductive rGO inks for the development of printed flexible electronics.

Keywords: Dispersion; Graphene; Graphene oxide; Reduction; Solubility.