Preparation and characterization of individual peptide-wrapped single-walled carbon nanotubes

Vasiliki Zorbas, Alfonso Ortiz-Acevedo, Alan B. Dalton, Mario Miki Yoshida, Gregg R. Dieckmann, Rockford K. Draper, Ray H. Baughman, Miguel Jose-Yacaman, Inga H. Musselman

Research output: Contribution to journalArticlepeer-review

262 Scopus citations


Two challenges for effectively exploiting the remarkable properties of single-walled carbon nanotubes (SWNTs) are the isolation of intact individual nanotubes from the raw material and the assembly of these isolated SWNTs into useful structures. In this study, we present atomic force microscopy (AFM) evidence that we can isolate individual peptide-wrapped SWNTs, possibly connected end-to-end into long fibrillar structures, using an amphiphilic α-helical peptide, termed nano-1. Transmission electron microscopy (TEM) and well-resolved absorption spectral features further corroborate nano-1's ability to debundle SWNTs in aqueous solution. Peptide-assisted assembly of SWNT structures, specifically in the form of Y-, X-, and intraloop junctions, was observed in the AFM and TEM images.

Original languageEnglish (US)
Pages (from-to)7222-7227
Number of pages6
JournalJournal of the American Chemical Society
Issue number23
StatePublished - Jun 16 2004
Externally publishedYes

ASJC Scopus subject areas

  • Catalysis
  • General Chemistry
  • Biochemistry
  • Colloid and Surface Chemistry


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