Helical wrapping of single-walled carbon nanotubes by water soluble poly(p-phenyleneethynylene).


Journal Article

Amphiphilic, linear conjugated poly[p-{2,5-bis(3-propoxysulfonicacidsodiumsalt)}phenylene]ethynylene (PPES) efficiently disperses single-walled carbon nanotubes (SWNTs) under ultrasonication conditions into the aqueous phase. Vis-NIR absorption spectroscopy, atomic force microscopy (AFM), and transmission electron microscopy (TEM) demonstrate that these solubilized SWNTs are highly individualized. AFM and TEM data reveal that the interaction of PPES with SWNTs gives rise to a self-assembled superstructure in which a polymer monolayer helically wraps the nanotube surface; the observed PPES pitch length (13 +/- 2 nm) confirms structural predictions made via molecular dynamics simulations. This work underscores design elements important for engineering well-defined nanotube-semiconducting polymer hybrid structures.

Full Text

Duke Authors

Cited Authors

  • Kang, YK; Lee, O-S; Deria, P; Kim, SH; Park, T-H; Bonnell, DA; Saven, JG; Therien, MJ

Published Date

  • April 2009

Published In

Volume / Issue

  • 9 / 4

Start / End Page

  • 1414 - 1418

PubMed ID

  • 19281229

Pubmed Central ID

  • 19281229

Electronic International Standard Serial Number (EISSN)

  • 1530-6992

International Standard Serial Number (ISSN)

  • 1530-6992

Digital Object Identifier (DOI)

  • 10.1021/nl8032334


  • eng