摘要
采用金属还原多壁碳纳米管（MWNTs）的方法，通过一步反应将2-溴甲基-N，N’-双（4-取代苯甲酰）对苯二胺液晶（LC）分子腰接到MWNTs的侧壁，制备出LC功能化的MWNTs（LC-MWNTs）．拉曼和红外测试结果证实LC分子经共价键接枝到MWNTs的侧壁，透射电镜观察显示MWNTs表面包覆了一层3～5nm的LC分子．热重分析测试表明LC分子在MWNTs上的接枝率约为23％，LC-MWNTs在DMF中显示良好的分散稳定性．
A novel nanocomposite （LC-MWNTs） of the liquid crystal （LC） molecules＇ waist positions anchored on the surface of multiwall carbon nanotubes （MWNTs） was prepared by using a dissolving metal reduction method. The formation of the LC-MWNTs composite is confirmed by both Raman and FT-IR spectroscopy. HRTEM demonstrates that the LC molecules are anchored on the surface of MWNTs via covalent linkage, with a wrapped thickness approximately 3-5 nm. The loss-weight fraction of the LC layers for the LC-MWNTs can be roughly estimated as 23% by TGA. The experiments of solubility exhibit that the LC-MWNTs forms a stable suspension solution in polar solvents such as dimethylformamide.
出处
《湘潭大学自然科学学报》
CAS
CSCD
北大核心
2009年第3期90-95,共6页
Natural Science Journal of Xiangtan University
基金
国家自然科学基金资助项目(50573019)
湖南省科技计划资助项目(2006GK3102)
关键词
多壁碳纳米管
液晶
功能化
Multiwall carbon nanotubes
Liquid crystal
Functionalization
