Peptide Nanotube Nematic Phase.

Research output: Contribution to journalArticle

Abstract

The self-assembly of the trifluoroacetate salt of the short peptide (ala)(6)-lys (A(6)K) in water has been investigated by cryo-transmission electron microscopy and small-angle X-ray scattering. For concentrations below ca. 12%, the peptide does not self-assemble but forms a molecularly dispersed solution. Above this critical concentration, however, A(6)K self-assembles into several-micrometer-long hollow nanotubes with a monodisperse cross-sectional radius of 26 nm. Because the peptides carry a positive charge, the nanotubes are charge-stabilized. Because of the very large aspect ratio, the tubes form an ordered phase that presumably is nematic.

Details

Authors
  • S Bucak
  • Celen Cenker
  • Irem Nasir
  • Ulf Olsson
  • Malin Zackrisson Oskolkova
Organisations
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Physical Chemistry
Original languageEnglish
Pages (from-to)4262-4265
JournalLangmuir
Volume25
Publication statusPublished - 2009
Publication categoryResearch
Peer-reviewedYes