Journal
COLLOIDS AND SURFACES B-BIOINTERFACES
Volume 89, Issue -, Pages 79-85Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.colsurfb.2011.08.026
Keywords
Graphene oxide; Graphene; In vitro toxicology
Funding
- Foundation for Polish Science
- Hong Kong Research Grants Council (RGC) [CityU 112510]
- City University of Hong Kong [9667038]
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The synthesis, characterization, and toxicity of graphene oxide and reduced graphene oxide are reported. Prior to the cytocompatibility tests the stability of the suspensions in a wide range of concentrations (3.125-100 mu g/mL) of three different dispersants is studied. Polyethylene glycol (PEG), polyethylene glycol-polypropylene glycol-polyethylene glycol (Pluronic P123), and sodium deoxycholate (DOC) are investigated as the dispersants. The toxicity depends on the type of dispersant and concentration of the nanomaterials in the suspensions. Detailed analysis suggests that graphene oxide functionalized with PEG in the concentration range between 3125 mu g/mL and 25 mu g/mL exhibits the best biocompatibility with mice fibroblast cells (line L929). (C) 2011 Elsevier B.V. All rights reserved.
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