Center of Special Materials and Technology, Fudan University, Shanghai 200433, China.
J Colloid Interface Sci. 2010 Aug 15;348(2):377-83. doi: 10.1016/j.jcis.2010.04.055. Epub 2010 Apr 24.
In this study, we report a scalable, fast, and easy method for preparation of organophilic chemically functionalized graphene (OCFG) sheets. The basic strategy involved the preparation of graphite oxide (GO) and the complete exfoliation of GO into graphene oxide sheets, followed by reacting with 1-bromobutane to obtain OCFG sheets. Thermogravimetric analysis, Raman spectroscopy, and Fourier transform infrared spectroscopy indicated the functionalization of GO. Transmission electron microscopy and atomic force microscopy were used to demonstrate the structure of produced graphene oxide and OCFG sheets. Ultraviolet-visible spectroscopy confirmed that OCFG sheets disperse well in organic solvents and the solutions obey Beer's law. The resulting organic dispersions are homogeneous, exhibit long-term stability, and are made up of graphene sheets a few hundred nanometers large. The ability to prepare graphene dispersions in organic media facilitates their combination with polymers to yield homogeneous composites.
在这项研究中，我们报告了一种可扩展、快速且简便的方法来制备亲有机化学功能化石墨烯（OCFG）片。基本策略涉及制备氧化石墨（GO）和完全将 GO 剥离成氧化石墨烯片，然后与 1-溴丁烷反应得到 OCFG 片。热重分析、拉曼光谱和傅里叶变换红外光谱表明 GO 发生了功能化。透射电子显微镜和原子力显微镜用于证明所制备的氧化石墨烯和 OCFG 片的结构。紫外-可见光谱证实 OCFG 片在有机溶剂中分散良好，溶液遵守比尔定律。所得的有机分散体是均匀的，表现出长期稳定性，并且由几百纳米大小的石墨烯片组成。在有机介质中制备石墨烯分散体的能力促进了它们与聚合物的结合，以获得均匀的复合材料。
