Special Section on Fundamental and Applied Nanoelectromagnetics

Enhancement of infrared absorption of biomolecules absorbed on single-wall carbon nanotubes and graphene nanosheets

[+] Author Affiliations
Galyna Dovbeshko

Institute of Physics of the National Academy of Sciences of Ukraine, 46 Nauki Avenue, 03028, Kyiv, Ukraine

Olena Gnatyuk

Institute of Physics of the National Academy of Sciences of Ukraine, 46 Nauki Avenue, 03028, Kyiv, Ukraine

Olena Fesenko

Institute of Physics of the National Academy of Sciences of Ukraine, 46 Nauki Avenue, 03028, Kyiv, Ukraine

Anna Rynder

Institute of Physics of the National Academy of Sciences of Ukraine, 46 Nauki Avenue, 03028, Kyiv, Ukraine

National University of Kyiv-Mohyla Academy, 2 Skovorody Street, 04070, Kyiv, Ukraine

Oleg Posudievsky

L.V. Pisarzhevsky Institute of Physical Chemistry of the National Academy of Sciences of Ukraine, 31 Nauki Avenue, 03028, Kyiv, Ukraine

J. Nanophoton. 6(1), 061711 (Oct 22, 2012). doi:10.1117/1.JNP.6.061711
History: Received July 9, 2012; Revised September 21, 2012; Accepted September 25, 2012
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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, COH, and CN 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.

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© 2012 Society of Photo-Optical Instrumentation Engineers

Citation

Galyna Dovbeshko ; Olena Gnatyuk ; Olena Fesenko ; Anna Rynder and Oleg Posudievsky
"Enhancement of infrared absorption of biomolecules absorbed on single-wall carbon nanotubes and graphene nanosheets", J. Nanophoton. 6(1), 061711 (Oct 22, 2012). ; http://dx.doi.org/10.1117/1.JNP.6.061711


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