General Approach to Individually Dispersed, Highly Soluble, and Conductive Graphene Nanosheets Functionalized by Nitrene Chemistry
General Approach to Individually Dispersed, Highly Soluble, and Conductive Graphene Nanosheets Functionalized by Nitrene Chemistry
复制标题
通过氮烯化学功能化单独分散、高度可溶且导电的石墨烯纳米片的一般方法
DOI：
10.1021/cm101634k
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发表时间：
2010-09-14
影响因子：
8.6
通讯作者：
Gao, Chao
中科院分区：
文献类型：
--
作者：
He, Hongkun;Gao, Chao
报道了一种基于亚硝基化学的共价功能化石墨烯纳米片的统一方法。该策略简单高效，允许各种功能基团（如羟基、羧基、氨基、溴、长烷基链等）和聚合物（如聚乙二醇、聚苯乙烯）以共价稳定地锚定在石墨烯上，从而在一步反应中从氧化石墨烯生成单层功能化石墨烯。利用显微镜（AFM， SEM， TEM），光谱（FTIR， XPS, Raman），热重分析（TGA）和x射线衍射（XRD）测量对纳米片的结构和形貌进行了表征。由此产生的功能化石墨烯纳米片具有导电性，易于分散在溶剂中，易于加工，使其成为进一步改性和应用的有希望的候选者，如纳米杂化和聚合物复合材料等。所提出的工作提供了一种通用的方法来制备具有不同特性的分散石墨烯纳米片。
A unified approach to covalently functionalize graphene nanosheets based on nitrene chemistry is reported. This strategy is simple and efficient, allowing various functional moieties (e.g., hydroxyl, carboxyl, amino, bromine, long alkyl chain, etc.) and polymers (e.g., poly(ethylene glycol), polystryene) to covalently and stably anchor on graphene to produce single-layer functionalized graphene from graphene oxide in a one-step reaction. The structure and morphology of nanosheets are characterized using microscopy (AFM, SEM, TEM), spectroscopy (FTIR, XPS, Raman), thermal gravimetric analysis (TGA), and X-ray diffraction (XRD) measurements. The resulting functionalized graphene nanosheets are electrically conductive, readily dispersible in solvents and easily processable, making them promising candidates for further modification and applications such as nanohybrids, and polymer composites, etc. The presented work provides a general methodology to prepare individually dispersed graphene nanosheets with vari...