In situ Raman scattering studies of alkali-doped single wall carbon nanotubes

A. Claye, S. Rahman, J. E. Fischer, A. Sirenko, G. U. Sumanasekera, P. C. Eklund

Research output: Contribution to journalArticlepeer-review

140 Scopus citations

Abstract

Electrochemical doping and in situ Raman scattering were used to study charge transfer in K- and Li-doped single wall carbon nanotubes (SWNT) as a function of alkali concentration. An 8 cm-1 downshift was observed for the tangential phonon mode of SWNT doped to stoichiometries of KC24 and Li1.25C6. The shift in both systems is reversible upon de-doping despite an irreversible loss of crystallinity. These results indicate that the tangential mode shifts result from electron transfer from alkali dopants to the SWNT, and that these modes are only weakly affected by long-range order within the ropes.

Original languageEnglish (US)
Pages (from-to)16-22
Number of pages7
JournalChemical Physics Letters
Volume333
Issue number1-2
DOIs
StatePublished - Jan 5 2001
Externally publishedYes

All Science Journal Classification (ASJC) codes

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

Fingerprint Dive into the research topics of 'In situ Raman scattering studies of alkali-doped single wall carbon nanotubes'. Together they form a unique fingerprint.

Cite this