Volume 246, Issue 3 pp. 496-499
Original Paper

High pressure Raman study of carotene-encapsulating single-wall carbon nanotubes

J. Arvanitidis

Corresponding Author

J. Arvanitidis

Physics Division, School of Technology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece

Department of Applied Sciences, Technological Educational Institute of Thessaloniki, 57400 Sindos, Greece

Phone: +30 2310 995959, Fax: +30 2310 995928Search for more papers by this author
D. Christofilos

D. Christofilos

Physics Division, School of Technology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece

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S. M. Souliou

S. M. Souliou

Physics Division, School of Technology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece

Physics Department, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece

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K. Yanagi

K. Yanagi

Nanotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8562, Japan

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H. Kataura

H. Kataura

Nanotechnology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki, 305-8562, Japan

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G. A. Kourouklis

G. A. Kourouklis

Physics Division, School of Technology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece

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S. Ves

S. Ves

Physics Department, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece

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First published: 17 February 2009

Abstract

The pressure response of carotene-encapsulating single-wall carbon nanotubes is investigated by means of Raman spectroscopy. The pressure evolution of the tangential G band frequencies of the carbon nanotubes is linear without any specific features. On the other hand, the pressure response of the carotene's ν1 mode frequency is quite distinct, having a smaller low pressure slope than that reported in the literature for the molecule. This behaviour is compatible with the pressure screening effect in the interior of carbon nanotubes. For pressure higher than 2 GPa, the pressure slope becomes even smaller, an effect which can be attributed to the theoretically predicted cross-section deformation of the encapsulating tubes. (© 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

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