Enantioselective absorption of chirally doped liquid crystalline networks studied by the use of an electronic microbalance.
A polydomain cholesteric elastomer was obtained by cross-linking a nematic side-chain polysiloxane in the presence of a chiral dopant. After extraction of the chiral dopant, sorption experiments were performed, by the use of an electronic microbalance, in the presence of each enantiomer of a chiral amine molecule. The sorption kinetics corresponds to a Fickian diffusion behavior. They allowed us to determine the diffusion coefficients and to show that the doped polymer has a more pronounced affinity toward one of the enantiomers.
Palaprat
G
G
Laboratoire Interactions Moléculaires et Réactivité Chimique et Photochimique, UMR CNRS 5623, Université Paul Sabatier, 31062 Toulouse cedex 9, France.
Marty
J-D
JD
Langevin
D
D
Finkelmann
H
H
Mauzac
M
M
D000042:Absorption; D000588:Amines / Q000737:chemistry; D004583:Electrons; D015394:Molecular Structure; D010627:Phenethylamines / Q000737:chemistry; D012995:Solubility; D013237:Stereoisomerism
D000588:Amines; D010627:Phenethylamines; C033198:1-phenethylamine