Sorption properties of functionalized liquid crystalline networks.
Functionalized polydomain chiral elastomers were obtained by cross-linking side-chain liquid crystalline polysiloxanes bearing acid functions. Sorption experiments were performed by the use of an electronic microbalance, in the presence of one enantiomer of a chiral amine molecule, able to interact with the acid groups. The results showed that Fick's diffusion law is not valid anymore as soon as an interaction between the material and the molecule is present. Moreover, it was demonstrated that the grafting of interacting groups on a chiral elastomer enhanced both the capacity and selectivity toward one enantiomer.
Palaprat
G
G
Laboratoire Interactions Moléculaires et Réactivité Chimique et Photochimique, Université de Toulouse (Paul Sabatier), IMRCP UMR CNRS 5623, 31062 Toulouse cedex 9, France.
Mingotaud
A-F
AF
Langevin
D
D
Marty
J-D
JD
Mauzac
M
M