Acta Phys. -Chim. Sin. ›› 2004, Vol. 20 ›› Issue (04): 373-376.doi: 10.3866/PKU.WHXB20040408

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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

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