Quantitative evaluation of the octadecylamine-assisted bulk separation of semiconducting and metallic single-wall carbon nanotubes by resonance Raman spectroscopy

Ge G. Samsonidze*, S. G. Chou, A. P. Santos, V. W. Brar, G. Dresselhaus, M. S. Dresselhaus, A. Selbst, A. K. Swan, M. S. Ünlü, B. B. Goldberg, D. Chattopadhyay, S. N. Kim, F. Papadimitrakopoulos

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

73 Scopus citations

Abstract

A method was proposed for evaluating the ratio of metallic (M) to semiconducting (S) single-wall carbon nanotubes (SWNT) in the different fractions of the separation process using resonance raman spectroscopy (RRS) at several laser exitation energy values. The selective stabilization of octadecylamine (ODA) on S SWNT was found to provide a means for the bulk separation of S from M SWNT. Utilizing RRS and the relative changes in the integrated intensities of the radial-breathing mode region, a generic method was developed to provide quantitative evaluation of the separation efficiency between M and S SWNT along with diameter separation. It was observed that the ODA-assisted separation is effective in generating fractions five times enriched in S SWNT.

Original languageEnglish (US)
Pages (from-to)1006-1008
Number of pages3
JournalApplied Physics Letters
Volume85
Issue number6
DOIs
StatePublished - Aug 9 2004

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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