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Acta Chimica Sinica ›› 2005, Vol. 63 ›› Issue (20): 1936-1938. Previous Articles    

Reports

高纯度可溶性单壁碳纳米管的吸收光谱

郭丽华1,3，宫丽红2，袁福龙1，张斌1，白续铎1，廉永福*,1   

  1. (1黑龙江大学化学化工与材料学院 哈尔滨 150080)
    (2哈尔滨师范大学理化学院 哈尔滨 150080)
    (3哈尔滨师范大学呼兰学院化学系 哈尔滨 150500)
  • 投稿日期:2005-12-31 修回日期:2005-06-22 发布日期:2010-12-10
  • 通讯作者: 廉永福

Absorption Spectrum of Highly Pure and Soluble Single-walled Carbon Nanotubes

GUO Li-Hua1,3, GONG Li-Hong2, YUAN Fu-Long1, ZHANG Bin1
BAI Xu-Duo1, LIAN Yong-Fu*,1   

  1. (1 School of Chemistry and Materials Science, Heilongjiang University, Harbin 150080)
    (2 Faculty of Physics and Chemistry, Harbin Normal University, Harbin 150080)
    (3 Chemistry Department of Hulan College, Harbin Normal University, Harbin 150500)
  • Received:2005-12-31 Revised:2005-06-22 Published:2010-12-10
  • Contact: LIAN Yong-Fu

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Raw electric-arc-produced single-walled carbon nanotubes (SWNTs) treated by K2S2O8 oxidation in dilute sulfuric acid solution have very good solubility in water, DMF, ethanol and other polar solvents. Application of a dispersion-centrifugation cycle yielded a highly pure and soluble SWNTs sample, which was evaluated by solution-phase optical absorption spectroscopy. In sharp contrast to the starting materials, thus obtained SWNTs demonstrate many fine features, highly elevated intensity of the semiconducting absorptions in their UV-vis-NIR spectra. By referring to an “impurity-free” sample, the relative purity of the soluble sample reaches a value as high as 160% with monodispersity of 5%.

Key words: single-walled carbon nanotube, centrifugation, absorption spectroscopy