Yan Weibo, Huang Yi, Xu Yanfei, Huang Lu, Chen Yongsheng
Key Laboratory of Functional Polymer Materials, Center for Nanoscale Science and Technology, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300 071, China.
J Nanosci Nanotechnol. 2012 Mar;12(3):2270-7. doi: 10.1166/jnn.2012.5755.
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.
通过离子交换，利用咪唑鎓离子液体（1,3 - 二正十二烷基咪唑溴）对氧化石墨烯进行快速有效的共价功能化，得到了可均匀分散于邻二氯苯中的功能化氧化石墨烯（DDIB - GO）片材。通过傅里叶变换红外光谱（FTIR）、紫外可见近红外光谱、X射线光电子能谱（XPS）、热重分析（TGA）、透射电子显微镜（TEM）、原子力显微镜（AFM）对所得的DDIB - GO片材进行了表征。此外，FTIR、XPS和TGA表明1,3 - 二正十二烷基咪唑已共价连接到氧化石墨烯片材上。紫外可见近红外光谱、TEM和AFM表明，功能化后，DDIB - GO片材的尺寸和形状与氧化石墨烯片材相比变化不大，且大多以单层形式分散。高温退火后，由DDIB - GO在邻二氯苯中制备的薄膜具有良好的导电性。
