Giant optical activity of sugar in thin soap films.
We report on enhanced experimental optical activity measurements of thin soap films in the presence of sugar. This unusual optical activity is linked to the intramolecular chiral conformation of the glucose molecules at the air/liquid interface. Choosing sodium dodecylsulfate (SDS) as a model surfactant and glucose as model sugar, favorable interactions between the anionic group -OSO3(-)- and the glucose molecules are highlighted. This induces an interfacial anchoring of glucose molecules leading to a perturbing influence of the asymmetric chiral environment.
Institut, CNRS UMR 6521, Université de Rennes I, Campus de Beaulieu, 35042 Rennes, France.
Janine
J
Emile
Olivier
O
Emile
Aziz
A
Ghoufi
Alain
A
Moréac
Federico
F
Casanova
Minxia
M
Ding
Patrick
P
Houizot
D002241:Carbohydrates / Q000737:chemistry*; D013059:Spectrum Analysis, Raman; D013501:Surface-Active Agents / Q000737:chemistry*
D002241:Carbohydrates; D013501:Surface-Active Agents
Chirality; Interfacial structure; Optical activity; Soap film