Racemic single-walled carbon nanotubes exhibit circular dichroism when wrapped with DNA

Gordana Dukovic, Milan Balaz, Peter Doak, Nina D. Berova, Ming Zheng, Robert S. Mclean, Louis E. Brus

Research output: Contribution to journalArticlepeer-review

114 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)9004-9005
Number of pages2
JournalJournal of the American Chemical Society
Volume128
Issue number28
DOIs
Publication statusPublished - 2006 Jul 19

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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