物理化学学报 >> 2004, Vol. 20 >> Issue (04): 373-376.doi: 10.3866/PKU.WHXB20040408

研究论文 上一篇    下一篇

豆荚型纳米材料C60@SWNTs的制备和表征

李欢军;官轮辉;施祖进;顾镇南   

  1. 北京大学化学与分子工程学院,北京 100871
  • 收稿日期:2003-10-06 修回日期:2003-11-27 发布日期:2004-04-15
  • 通讯作者: 顾镇南 E-mail:guzn@pku.edu.cn

Synthesis and Characterization of C60@SWNTs

Li Huan-Jun;Guan Lun-Hui;Shi Zu-Jin;Gu Zhen-Nan   

  1. College of Chemistry and Molecular Engineering, Peking University, Beijing 100871
  • Received:2003-10-06 Revised:2003-11-27 Published:2004-04-15
  • Contact: Gu Zhen-Nan E-mail:guzn@pku.edu.cn

摘要: 通过气相扩散的方法将C60填入单壁碳纳米管(SWNTs),制备了豆荚型纳米材料C60@SWNTs,并利用高分辨电子显微镜(HRTEM)和拉曼光谱(Raman spectra)对其进行了表征.结果均证明C60以较高的比例填充入单壁碳纳米管中.HRTEM结果表明,填入单壁碳纳米管的C60之间的距离与面心立方C60晶体中C60之间的距离有细微的差别,说明C60分子与SWNTs间存在弱的范德华相互作用.此外,还观察到在电子束的照射下,C60在SWNT中两两聚合的现象.

关键词: 单壁碳纳米管, C60@SWNTs, 豆荚, 聚合

Abstract: Single-walled carbon nanotubes encapsulating C60 (peapods) C60@SWNTs have been successfully synthesized by a vapor diffusion method. High-resolution transmission electron microscopy (HRTEM) and Raman spectrum indicate high-density C60 chains inside the nanotubes. The distance between two adjacent C60 molecules in SWNTs is a little different from that in face centered cubic (fcc) C60 crystal,which reveals that there is a weak van der Waals interaction between the nanotubes and the encapsulated fullerenes. Moreover, in situ e-beam irradiation in the electron microscope caused coalescence of the neighboring C60 molecules inside the SWNTs.

Key words: Single-walled carbon nanotubes, C60@SWNTs, Peapods, Coalesce