Dispersion of reduced graphene oxide in multiple solvents with an imidazolium-modified hexa-peri-hexabenzocoronene.
An imidazolium-modified hexa-peri-hexabenzocoronene derivative (HBC-C(11)-MIM[Cl(-)]) was designed and synthesized as a stabilizer to fabricate reduced graphene oxide (RGO). The resulting RGO/HBC-C(11)-MIM[Cl(-)] hybrid shows excellent dispersivity (5.0 mg mL(-1)) and stability in water. RGO/HBC-C(11)-MIM[Cl(-)] 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-C(11)-MIM[Cl(-)] 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-C(11)-MIM[Cl(-)]-modified RGO sheets can be readily dispersed in polar organic solvents upon exchange of the hydrophilic Cl(-) ions for hydrophobic bis(trifluoromethylsulfonyl) amide (NTf(2)(-)) ions.
Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
Hengxing
H
Wei
Ying-Ying
YY
Li
Jinping
J
Chen
Yi
Y
Zeng
Guoqiang
G
Yang
Yi
Y
Li