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Article Dans Une Revue Journal of Colloid and Interface Science Année : 2013

Giant optical activity of sugar in thin soap films.

Janine Emile
Aziz Ghoufi
Alain Moréac
Federico Casanova
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Minxia Ding
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Résumé

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.

Domaines

Biophysique
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Dates et versions

hal-00854447 , version 1 (09-09-2013)

Identifiants

Citer

Janine Emile, Olivier Emile, Aziz Ghoufi, Alain Moréac, Federico Casanova, et al.. Giant optical activity of sugar in thin soap films.. Journal of Colloid and Interface Science, 2013, 408, pp.113-6. ⟨10.1016/j.jcis.2013.07.030⟩. ⟨hal-00854447⟩
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