Zeta-potential measurements of surfactant-wrapped individual single-walled carbon nanotubes Academic Article uri icon

abstract

  • A systematic study of the zeta ()-potential distribution of surfactant-wrapped individual single-walled carbon nanotubes (SWNTs) dissolved in water is presented here. The surface charge on the SWNT micelles, as measured by the -potential, has implications for the stability of the dispersions and for the electrophoretic and dielectrophoretic assembly and alignment of SWNTs. Very highly charged SWNTs are obtained by dispersing the nanotubes in high concentrations of anionic and cationic surfactants, whereas almost neutral SWNTs are obtained by using non-ionic surfactants. The -potential of the dissolved SWNTs is tuned by adjusting the surfactant concentration, the alkyl chain length of the surfactant molecule, and the solution pH in different surfactant-SWNT systems. 2007 American Chemical Society.

published proceedings

  • JOURNAL OF PHYSICAL CHEMISTRY C

altmetric score

  • 3

author list (cited authors)

  • White, B., Banerjee, S., O'Brien, S., Turro, N. J., & Herman, I. P.

citation count

  • 334

complete list of authors

  • White, Brian||Banerjee, Sarbajit||O'Brien, Stephen||Turro, Nicholas J||Herman, Irving P

publication date

  • September 2007