Synthesis of graphene soluble in organic solvents by simultaneous ether-functionalization with octadecane groups and reduction
Sun, Darren Delai
Date of Issue2010
School of Civil and Environmental Engineering
Octadecane-functionalized graphene (OD-G) soluble in organic solvents was produced by combining the 21 Hummers process for graphite oxidation and a simultaneous ether-functionalization and reduction approach 22 with 1-bromooctadecane in pyridine and dimethylformamide (DMF). The exfoliated OD-Gs were testified to 23 be monolayer sheets by transmission electron microscope (TEM) and atomic force microscopy (AFM). The 24 functionalization with octadecane (OD) groups and the effective deoxygenation of graphene oxide (GO) 25 were confirmed by Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and thermo- 26 gravimetric analysis (TGA). It is proved that the effective reduction and functionalization of GO could be 27 simultaneously completed during the refluxing process. The functionalization with OD groups can effectively 28 prevent the aggregation of GO during the reduction.
© 2010 Elsevier. This is the author created version of a work that has been peer reviewed and accepted for publication by Materials Letters, Elsevier. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: http://dx.doi.org/10.1016/j.matlet.2010.06.058.