Acta Phys. -Chim. Sin. ›› 2004, Vol. 20 ›› Issue (07): 673-675.doi: 10.3866/PKU.WHXB20040701

• Communication •     Next Articles

XPS Study of C－I Covalent Bond on Single-walled Carbon Nanotubes (SWNTs)

Wang Hai-Fang;Deng Xiao-Yong;Wang Jing;Gao Xing-Fa;Xing Geng-Mei;Shi Zu-Jin;Gu Zhen-Nan;Liu Yuan-Fang;Zhao Yu-Liang   

  1. College of Chemistry and Molecular Engineering, Peking University, Beijing　100871;Institute of High Energy Physics, Chinese Academy of Sciences, Beijing　100039
  • Received:2004-03-18 Revised:2004-04-16 Published:2004-07-15
  • Contact: Liu Yuan-Fang E-mail:yliu@pku.edu.cn

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Abstract: A simple method was used to synthesize the iodinated multi hydroxylated SWNTs (SWNTols) by the reaction of SWNTols with NaI in the presence of strong oxidant N-chloro-p-toluenesulfonamide. The formation of the C－I covalent bond was verified by comparing the electron binding energies of iodine of I-SWNTols and the reference materials, which were measured with the synchrotron radiation X-ray photoemission spectroscopy (SRXPS) as well as the conventional X-ray photoelectron spectroscopy (XPS). This result will be useful in applications of SWNTs in the biomedical and pharmaceutical sciences.

Key words: SWNTs, C－I covalent bond, X-ray photoelectron spectroscopy (XPS)