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Cyclodextrin-based self-assembled nanotubes at the water/air interface.

Authors
  • Hernández-Pascacio, Jorge
  • Garza, Cristina
  • Banquy, Xavier
  • Díaz-Vergara, Norma
  • Amigo, Alfredo
  • Ramos, Salvador
  • Castillo, Rolando
  • Costas, Miguel
  • Piñeiro, Angel
Type
Published Article
Journal
The Journal of Physical Chemistry B
Publisher
American Chemical Society
Publication Date
Nov 08, 2007
Volume
111
Issue
44
Pages
12625–12630
Identifiers
PMID: 17941668
Source
Medline
License
Unknown

Abstract

Native alpha-cyclodextrin (alpha-CD) is found to spontaneously form films at aqueous solution/air interfaces. Shape-response measurements to volume perturbations on drops hanging from a capillary indicate that temperature and sodium dodecyl sulfate (SDS) concentration strongly modify the viscoelastic properties of such films. By using isothermal titration calorimetry (ITC), Brewster angle microscopy (BAM), atomic force microscopy (AFM), and molecular dynamics (MD) simulations, it is shown that the films consist of self-assembled nanotubes whose building blocks are cyclodextrin dimers (alpha-CD2) and alpha-CD2-SDS1 complexes.

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