摘要
以1,8-二氮-二环[5,4,0]-7-十一烯(1,8-Diazabicyclo[5,4,0]undec-7-ene,DBU)作为催化剂,通过溴代烷烃和羧基的酯化反应制备了烷基改性的碳纳米管.分别采用1,6-二溴己烷、溴代正辛烷、溴代正十二烷和溴代正十六烷与硝酸氧化处理的碳纳米管反应,在碳纳米管表面共价接枝了不同长度的烷基链.实验结果表明,烷基改性的碳纳米管能够很好地分散在二氯甲烷、氯仿等有机溶剂中;并且随着接枝的烷基链碳数的增加,碳纳米管在有机溶剂中的分散性也越好。
Utilizing 1,8-diazabicyclo[5,4,0]undec-7-ene （DBU） as catalyst, alkyl functionalized multi-walled carbon nanotubes （alkyl-MWNT） were prepared by the esterification reaction of bromoalkane and carboxyl. To graft alkyl with different chain lengths onto MWNT, bromoalkanes with different numbers of carbon atoms, e.g. 1,6-dibromohexane, 1-bromooctane, 1-bromododecane and 1-bromohexadecane, were used to react with MWNT, which was pretreated with concentrated nitric acid. The prepared alkyl-MWNT can be readily dispersed in organic solvents, such as dichloromethane and chloroform, and the dispersibility increases with the increment of the alkyl chain length.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
2009年第3期245-248,共4页
Acta Chimica Sinica
基金
国家自然科学基金(No.50873029)
上海科技创新行动计划(No.08431902300)
中国博士后科学基金(ID.20080440569)资助项目
关键词
碳纳米管
酯化反应
化学改性
溴代烷烃
carbon nanotube
esterification reaction
chemical functionalization
bromoalkane
