Dispersion of Reduced Graphene Oxide in Multiple Solvents with an Imidazolium‐Modified Hexa‐peri‐hexabenzocoronene |
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| Authors: | Hengxing Wei Dr Ying‐Ying Li Dr Jinping Chen Dr Yi Zeng Prof Dr Guoqiang Yang Prof Dr Yi Li |
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| Institution: | 1. Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190 (China), Fax: (+86)?10‐8254‐3518;2. Beijing National Laboratory for Molecular Sciences (BNLMS), Key laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 (China), Fax: (+86)?10‐8261‐7315 |
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| Abstract: | An imidazolium‐modified hexa‐peri‐hexabenzocoronene derivative (HBC‐C11‐MIMCl?]) was designed and synthesized as a stabilizer to fabricate reduced graphene oxide (RGO). The resulting RGO/HBC‐C11‐MIMCl?] hybrid shows excellent dispersivity (5.0 mg mL?1) and stability in water. RGO/HBC‐C11‐MIMCl?] was comprehensively characterized by using atomic force microscopy, X‐ray diffraction, X‐ray photoelectron spectroscopy, thermogravimetric analysis, and Raman spectroscopy, thus revealing that one HBC‐C11‐MIMCl?] group can stabilize about 178 carbon atoms on the graphene sheets. The obtained hybrid film exhibits a high conductivity of 286 S m?1. Furthermore, the HBC‐C11‐MIMCl?]‐modified RGO sheets can be readily dispersed in polar organic solvents upon exchange of the hydrophilic Cl? ions for hydrophobic bis(trifluoromethylsulfonyl) amide (NTf2?) ions. |
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| Keywords: | conjugation graphene ion exchange pi interactions reduction |
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