Laser Induced Changes of the Raman Spectra of Pristine and Poly(tert-Butyl Acrylate) Functionalized Carbon Nanotubes - Open Journal of Composite Materials

OJCM > Vol.4 No.2, April 2014

Laser Induced Changes of the Raman Spectra of Pristine and Poly(tert-Butyl Acrylate) Functionalized Carbon Nanotubes ()

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DOI: 10.4236/ojcm.2014.42014 3,866 Downloads 5,888 Views

Author(s)

Deokjin Yu, Charles W. Blackledge, James P. Wicksted

Affiliation(s)

Department of Physics, Oklahoma State University, Stillwater, Oklahoma, USA.

ABSTRACT

Pristine and poly(tert-butyl acrylate) (PTBA) functionalized carbon nanotubes are continuously exposed to 2.41 eV laser irradiation while collecting Raman spectra. The loss of the intensity of the radial breathing modes (RBMs) of small metallic PTBA functionalized nanotubes is less than that of pristine nanotubes. A reduction of the intensity of the G^? band of pristine SWNTs occurs such that the overall shape of the G band evolves to resemble that of the PTBA functionalized sample. Complementing the measurement of the ratio of intensities of the D and G bands, the laser-in- duced spectral changes provide another way to determine the sidewall functionalization of carbon nanotubes. The laser-induced changes of the G and RBM bands are consistent with the greater sidewall reactivity of small metallic nanotubes toward functionalization with PTBA and reaction with photosensitized oxygen.

KEYWORDS

Raman Spectroscopy; Functionalized Carbon Nanotubes

Share and Cite:

Yu, D. , Blackledge, C. and Wicksted, J. (2014) Laser Induced Changes of the Raman Spectra of Pristine and Poly(tert-Butyl Acrylate) Functionalized Carbon Nanotubes. Open Journal of Composite Materials, 4, 122-130. doi: 10.4236/ojcm.2014.42014.

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