Optical characterization of DNA-wrapped carbon nanotube hybrids

S. G. Chou, H. B. Ribeiro, E. B. Barros, A. P. Santos, D. Nezich, Ge G. Samsonidze, C. Fantini, M. A. Pimenta, A. Jorio, F. Plentz Filho, M. S. Dresselhaus, G. Dresselhaus, R. Saito, M. Zheng, G. B. Onoa, E. D. Semke, A. K. Swan, M. S. Ünlü, B. B. Goldberg

Research output: Contribution to journalArticlepeer-review

131 Citations (Scopus)


Optical characterization of DNA-wrapped CoMoCAT carbon nanotube hybrids (DNA-CNT) and semiconductor-enriched DNA-CNT was carried out using resonant Raman spectroscopy (RRS) and photoluminescence (PL) experiments. The values of radial breathing modes frequency ωRBM were found to be relatively insensitive to the type of wrapping agents surrounding the nanotube. The values of ωRBM and the first and second resonant interband transitions, E11 and E22, for a particular (n, m) tube for all sample types in RRS and PL measurements are found to correspond to the values obtained for SDS-dispersed nanotubes measured with PL, but with a shift in Eii ranging from 10 to 80 meV. The DNA-wrapping has shown not only to provide good isolation to the individual nanotube in a bundle, but the DNA wrapping mechanism for the CoMoCAT sample has also been shown to be diameter selective.

Original languageEnglish
Pages (from-to)296-301
Number of pages6
JournalChemical Physics Letters
Issue number4-6
Publication statusPublished - 2004 Oct 21

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry


Dive into the research topics of 'Optical characterization of DNA-wrapped carbon nanotube hybrids'. Together they form a unique fingerprint.

Cite this