Racemic Single-Walled Carbon Nanotubes Exhibit Circular Dichroism When Wrapped with DNA
- 20 June 2006
- journal article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 128 (28) , 9004-9005
- https://doi.org/10.1021/ja062095w
Abstract
We have found that racemic mixtures of chiral single-walled nanotubes (SWNTs) wrapped with d(GT)20 DNA oligomer exhibit circular dichroism (CD). We attribute the CD signal to induced CD arising from the coupling of transition moments of the SWNTs and the DNA. Although the nanotube mixture appears to contain both enantiomers in equal amounts, DNA-SWNT transition moment interaction is more constructive for one SWNT enantiomer over the other, resulting in an overall CD signal.Keywords
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