Cyclodextrin-based self-assembled nanotubes at the water/air interface.
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.
Hernández-Pascacio
Jorge
J
Garza
Cristina
C
Banquy
Xavier
X
Díaz-Vergara
Norma
N
Amigo
Alfredo
A
Ramos
Salvador
S
Castillo
Rolando
R
Costas
Miguel
M
Piñeiro
Angel
A
D000388:Air; D003505:Cyclodextrins / Q000737:chemistry*; D008958:Models, Molecular; D043942:Nanotubes / Q000737:chemistry*; D012967:Sodium Dodecyl Sulfate / Q000737:chemistry; D012996:Solutions / Q000737:chemistry; D013499:Surface Properties; D013696:Temperature; D013997:Time Factors; D014867:Water / Q000737:chemistry
D003505:Cyclodextrins; D012996:Solutions; D014867:Water; D012967:Sodium Dodecyl Sulfate