Spectroscopic and SEM studies of SWNTs: Polymer solutions and films

Karachevtsev, V. A.; Glamazda, A. Y.; Dettlaff-Weglikowska, U.; Leontiev, V. S.; Mateichenko, P. V.; Roth, S.; Rao, A. M.

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Spectroscopic and SEM studies of SWNTs: Polymer solutions and films

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Dettlaff-Weglikowska, U.
Abteilung v. Klitzing, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;

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Roth, S.
Abteilung v. Klitzing, Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Karachevtsev, V. A., Glamazda, A. Y., Dettlaff-Weglikowska, U., Leontiev, V. S., Mateichenko, P. V., Roth, S., et al. (2006). Spectroscopic and SEM studies of SWNTs: Polymer solutions and films. Carbon, 44(7), 1292-1297.

Cite as: https://hdl.handle.net/21.11116/0000-000F-0287-6

Abstract

Raman spectra of SWNTs suspended in aqueous solutions containing
fragmented single-stranded DNA (SWNT:DNA), and films obtained from this
suspension have been obtained. SEM study of the dried films indicated
that the nanotubes tend to aggregate into bundles which results in the
enhancement of the Raman intensity of the G(-) tangential band, and an
upshift and broadening of the G(+) band. The intensity of radial
breathing modes of metallic SWNTs is higher in the SWNT:DNA films as
compared to that of the SWNT:DNA solution. The Raman spectra of
SWNT:PVP and SWNT:agaroza samples exhibit similar changes as the
SWNT:DNA samples when films are cast from the corresponding solutions.
Both films and the solution forms of SWNT:DNA yield luminescence
spectra which indicates the presence of individual tubes or small
bundles in the films. The luminescence bands of SWNT:DNA films are
relatively wider and is attributed to the interaction of DNA with the
nanotube surface in the solid state. (c) 2005 Published by Elsevier Ltd.