Synthesis of graphene soluble in organic solvents by simultaneous ether-functionalization with octadecane groups and reduction
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 (D...
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Main Authors: | , , , |
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Other Authors: | |
Format: | Article |
Language: | English |
Published: |
2011
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Subjects: | |
Online Access: | https://hdl.handle.net/10356/79950 http://hdl.handle.net/10220/7008 |
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Institution: | Nanyang Technological University |
Language: | English |
Summary: | 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. |
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