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Proceedings Paper

Cross-polarized spectroscopy of DNA-wrapped nanotubes: unraveling the nature of optical response
Author(s): Slava V. Rotkin; Stacy E. Snyder
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Paper Abstract

Breaking of the symmetry of a single-wall carbon nanotube in the field of a helical wrap of ionized single-stranded DNA is investigated. For a non-chiral tube, the helical perturbation generates "natural" optical activity in the DNA-nanotube complex. The one-electron absorption spectrum for light polarized across the tube is sensitive to the band structure modulation due to the wrapping. Lifting of optical selection rules results in new optical transitions and circular dichroism of the complex. These optical effects are predicted to serve as qualitative tools to directly identify the DNA wrapping.

Paper Details

Date Published: 4 September 2008
PDF: 13 pages
Proc. SPIE 7037, Carbon Nanotubes and Associated Devices, 703706 (4 September 2008); doi: 10.1117/12.794959
Show Author Affiliations
Slava V. Rotkin, Lehigh Univ. (United States)
Ctr. for Advanced Materials and Nanotechnology (United States)
Stacy E. Snyder, Lehigh Univ. (United States)

Published in SPIE Proceedings Vol. 7037:
Carbon Nanotubes and Associated Devices
Manijeh Razeghi; Didier Pribat; Young Hee Lee, Editor(s)

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