Colloidal Suspensions of Highly Reduced Graphene Oxide in a Wide Variety of Organic Solvents
Colloidal Suspensions of Highly Reduced Graphene Oxide in a Wide Variety of Organic Solvents
复制标题
DOI：
10.1021/nl803798y
复制
发表时间：
2009-04-01
期刊：
影响因子：
10.8
通讯作者：
Ruoff, Rodney S.
中科院分区：
文献类型：
--
作者：
Park, Sungjin;An, Jinho;Ruoff, Rodney S.
我们报道，在多种有机溶剂体系中很容易制备出化学改性石墨烯片的均匀胶体悬浮液。我们使用两组不同的溶解度参数来合理说明在给定溶剂类型中氧化石墨烯片以及还原氧化石墨烯片何时可能形成稳定的胶体悬浮液，何时不能。作为此类胶体悬浮液用途的一个例子，通过对还原氧化石墨烯片进行非常简单的过滤而生成的“纸状”材料具有高达16000西门子/米的电导率值。
We report that homogeneous colloidal suspensions of chemically modified graphene sheets were readily produced in a wide variety of organic solvent systems. Two different sets of solubility parameters are used to rationalize when stable colloidal suspensions of graphene oxide sheets and, separately, of reduced graphene oxide sheets in a given solvent type are possible and when they are not. As an example of the utility of such colloidal suspensions, "paperlike" materials generated by very simple filtration of the reduced graphene oxide sheets had electrical conductivity values as high as 16 000 S/m.