Effect of removal and change of surfactant upon the photoluminescence of carbon nanotubes

Timothy J. McDonald, Chaiwat Engtrakul, Marcus Jonesa, Jeffrey L. Blackbum, Garry Rumbles, Michael J. Heben

Research output: Contribution to journalConference articlepeer-review


We measure the concentration of single-walled nanotubes (SWNTs) present in aqueous suspensions by a technique that involves surfactant removal followed by high-temperature oxidation and mass spectroscopy of the resulting products. We also analyze the shift in SWNT emission energy evident from photoluminescence excitation spectroscopy as the surfactant molecule is changed. Next we study spectroscopic changes as surfactant is gently removed by dialysis.

Original languageEnglish
Article number59290W
Pages (from-to)1-7
Number of pages7
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - Dec 1 2005
EventPhysical Chemistry of Interfaces and Nanomaterials IV - San Diego, CA, United States
Duration: Aug 2 2005Aug 4 2005


  • Carbon nanotubes
  • Dielectric constant
  • Photoluminescence
  • Surfactant

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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