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Journal of Nanophotonics

Enhancement of infrared absorption of biomolecules absorbed on single-wall carbon nanotubes and graphene nanosheets
Author(s): Galyna I. Dovbeshko; Olena Gnatyuk; Olena M. Fesenko; Anna Rynder; Oleg Yu. Posudievskii
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Paper Abstract

Surface-enhanced infrared absorption effect was shown for graphene for the first time. Comparative analysis of the effect was carried out for thymine (Thy), one of the bases of DNA, absorbed on single-wall carbon nanotubes (SWCNT) and graphene sheets. The enhancement factor in the case of SWCNT was generally greater in comparison with that obtained for graphene sheets. Its value for SWCNT was up to six and the largest enhancement factors were found for vibrations of CH, C−OH , and C−N bonds. The maximum enhancement factor in the case of graphene sheets equal to 3.7 was found for ring and deformational vibrations of N-H bonds. The obtained experimental data allowed us to suppose that H-bonds influence the interaction between SWCNT and Thy in Thy-SWCNT/Au, while the chemically induced charge transfer is probably dominant in the case of Thy-graphene/Au.

Paper Details

Date Published: 22 October 2012
PDF: 9 pages
J. Nanophoton. 6(1) 061711 doi: 10.1117/1.JNP.6.061711
Published in: Journal of Nanophotonics Volume 6, Issue 1
Show Author Affiliations
Galyna I. Dovbeshko, Institute of Physics (Ukraine)
Olena Gnatyuk, Institute of Physics (Ukraine)
Olena M. Fesenko, Institute of Physics (Ukraine)
Anna Rynder, Institute of Physics (Ukraine)
Oleg Yu. Posudievskii, Institute of Physical Chemistry (Ukraine)

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