Journal
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
Volume 12, Issue 3, Pages 2270-2277Publisher
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/jnn.2012.5755
Keywords
Graphene Oxide; Ionic Liquid; Functionalization; Ionic Interactions; Conductivity
Categories
Funding
- NSFC [50902073, 50933003, 50903044]
- MOST [2011CB932602, 2011DFB50300]
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Functionalized graphene oxide (DDIB-GO) sheets, which can be homogeneously distributed into ortho-dichlorobenene, were obtained via rapid and effective covalent functionalization with imidazolium ionic liquids (1,3-didodecylimidazolium bromine) through ion exchange. The resulting DDIB-GO sheets were characterized by Fourier transform infrared spectroscopy (FTIR), UV Vis NIR spectroscopy, X-ray photoelectron spectroscopy (XPS), thermal gravimetric analysis (TGA), transmission electron microscopy (TEM), Atomic force microscopy (AFM). Furthermore, FTIR, XPS and TGA show that the 1,3-didodecylimidazolium have been covalently attached to the GO sheets. UV Vis NIR, TEM, and AFM demonstrate that after functionalization, the size and shape of DDIB-GO sheets had little change compared with GO sheets and it was mostly dispersed in single layer. And good electronic conductivity of the film prepared from DDIB-GO in ODCB was obtained after high temperature annealing.
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