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K. H. An, J. S. Park, C.M. Yang, S. Y. Jeong, S. C. Lim, C. Kang, J.H. Son, M. S. Jeong, Y. H. Lee, A Diameter-Selective Attack of Metallic Carbon Nanotubes by Nitronium Ions, Journal of American Chemical Society, Vol. 127,No.14,March 2005,pp. 5196-5203.

has been cited by the following article:

• TITLE: Spectroscopic Investigation of Modified Single Wall Carbon Nanotube (SWCNT)

  AUTHORS: S Hussain, P Jha, A Chouksey, R Raman, S.S. Islam, T Islam, P.K Choudhary

  KEYWORDS: Single Wall Carbon Nanotubes, Functionalization, Raman Spectroscopy, Ftir and Uv-Vis-Nir Spectroscopy

  JOURNAL NAME: Journal of Modern Physics, Vol.2 No.6, July 1, 2011

  ABSTRACT: We have investigated the effects of chemical treatment on Single Wall Carbon Nanotube (SWCNT) before and after being modified with HNO3/H2SO4 by Raman, FTIR and UV-Vis-NIR spectroscopy. The results show successful carboxylation of the CNT sidewalls as observed from FTIR and UV-Vis-NIR spectroscopy. This successful functionalization is achieved in 6-8 hrs of refluxing. We also report changes in the first and second order Raman spectra of SWNTs functionalized with oxygenated groups. During the experiment, we observe some important Raman features: Radial breathing mode (RBM), Tangential mode (G-band), and Disordered mode (D-band); which are affected due to the chemical oxidation of carbon nanotubes. We found that the ratio of D- to the G-band intensity (Id/Ig), increase after functionalization and the RBM mode in acid treated SWCNTs is almost disappeared.