Self-assembly of ordered nanowires in biological suspensions of single-wall carbon nanotubes.

Published

Journal Article

We investigate the self-assembly of ordered nanowires from length-purified single-wall carbon nanotubes (SWCNTs) in aqueous suspensions of the biological surfactant sodium deoxycholate. Macroscopically straight and nearly periodic linear arrangements of aligned individual SWCNTs are found to self-assemble in two-dimensional geometries from nanotube suspensions that are otherwise stable in the bulk, which we attribute to a dominance of surface effects under strong confinement. Directed self-assembly is explored through surface patterning, opening up new potential routes to nanotube manipulation for optical diagnostics and applications that require ordered arrangements of mutually aligned SWCNTs. The stability of these structures to thermal fluctuations and changes in solution chemistry are surveyed with near-infrared fluorescence microscopy.

Full Text

Duke Authors

Cited Authors

  • Hobbie, EK; Fagan, JA; Becker, ML; Hudson, SD; Fakhri, N; Pasquali, M

Published Date

  • January 2009

Published In

Volume / Issue

  • 3 / 1

Start / End Page

  • 189 - 196

PubMed ID

  • 19206266

Pubmed Central ID

  • 19206266

Electronic International Standard Serial Number (EISSN)

  • 1936-086X

International Standard Serial Number (ISSN)

  • 1936-0851

Digital Object Identifier (DOI)

  • 10.1021/nn800609y

Language

  • eng