Cross-polarized spectroscopy of DNA-wrapped nanotubes: unraveling the nature of optical response

Slava V. Rotkin; Stacy E. Snyder

doi:10.1117/12.794959

4 September 2008 Cross-polarized spectroscopy of DNA-wrapped nanotubes: unraveling the nature of optical response

Slava V. Rotkin, Stacy E. Snyder

Proceedings Volume 7037, Carbon Nanotubes and Associated Devices; 703706 (2008) https://doi.org/10.1117/12.794959
Event: NanoScience + Engineering, 2008, San Diego, California, United States

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.

Citation Download Citation

Slava V. Rotkin and Stacy E. Snyder "Cross-polarized spectroscopy of DNA-wrapped nanotubes: unraveling the nature of optical response", Proc. SPIE 7037, Carbon Nanotubes and Associated Devices, 703706 (4 September 2008); https://doi.org/10.1117/12.794959

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