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Polycation stabilization of graphene suspensions

Kamran ul Hasan1*, Mats O Sandberg2, Omer Nur1 and Magnus Willander1

Author Affiliations

1 Department of Science and Technology (ITN), Linköping University, Campus Norrköping, SE-601 74 Norrköping, Sweden

2 Acreo AB Bredgatan 34, SE-602 21 Norrköping, Sweden

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Nanoscale Research Letters 2011, 6:493  doi:10.1186/1556-276X-6-493

Published: 16 August 2011


Graphene is a leading contender for the next-generation electronic devices. We report a method to produce graphene membranes in the solution phase using polymeric imidazolium salts as a transferring medium. Graphene membranes were reduced from graphene oxides by hydrazine in the presence of the polyelectrolyte which is found to be a stable and homogeneous dispersion for the resulting graphene in the aqueous solution. A simple device with gold contacts on both sides was fabricated in order to observe the electronic properties.