乙二胺和己二胺氨基功能化氧化石墨烯

摘要

Graphene oxide (GO) obtained by Hummers method was functionalized by ethylenediamine (EA) and 1,6-hexanediamine (HA) in N,N-dimethyl formamide using 1,1,3,3-tetramethy-luronium hexafluorophosphate as a coupling agent.The functionalized GO was characterized by elemental analysis,FT-IR,XRD,XPS,TGA,SEM and TEM.Results showed one carbon atom in nine to ten of the carbon atoms in GO was functionalized by an amine group.The thermal stability of the GO functionalized by HA was much higher than the one functionalized by EA.However,the former was less dispersible in N,N-dimethyl formamide than the latter.%采用了一种通过采用乙二胺和己二胺接枝改性制备氨基功能化石墨烯的高效、经济的方法.结果表明,该方法可对氧化石墨烯进行有效的氨基化,且官能化程度较高,每9～10个碳原子中就有一个参与氨基化反应；随着二元胺烷基链长度的增长,氨基功能化氧化石墨烯的的热稳定性得到明显提高,但在N,N-二甲基甲酰胺溶剂中的分散性却会变差.