title: Chirality in dynamic supramolecular nanotubes induced by a chiral solvent.
abstract: Amplification of chirality has been reported in polymeric systems. It has also been shown that related effects can occur in polymer-like dynamic supramolecular aggregates, if a subtle balance between noncovalent interactions allows the coupling between a chiral information and a cooperative aggregation process. In this context, we report a strong majority-rules effect in the formation of chiral dynamic nanotubes from chiral bisurea monomers. Furthermore, similar helical nanotubes (with the same circular dichroism signature) can be obtained from racemic monomers in a chiral solvent. Competition experiments reveal the relative strength of the helical bias induced by the chiral monomer or by the chiral solvent. The nanotube handedness is imposed by the monomer chirality, whatever the solvent chirality. However, the chirality of the solvent has a significant effect on the degree of chiral induction.
authors.affiliation: UPMC Univ Paris 06, UMR 7610, Chimie des Polymères, 75005, Paris, France.
authors.forename: Benjamin
authors.initials: B
authors.lastname: Isare
authors.forename: Mathieu
authors.initials: M
authors.lastname: Linares
authors.forename: Loussiné
authors.initials: L
authors.lastname: Zargarian
authors.forename: Serge
authors.initials: S
authors.lastname: Fermandjian
authors.forename: Motofumi
authors.initials: M
authors.lastname: Miura
authors.forename: Shigeyasu
authors.initials: S
authors.lastname: Motohashi
authors.forename: Nicolas
authors.initials: N
authors.lastname: Vanthuyne
authors.forename: Roberto
authors.initials: R
authors.lastname: Lazzaroni
authors.forename: Laurent
authors.initials: L
authors.lastname: Bouteiller
mesh_terms: D046911:Macromolecular Substances / Q000737:chemistry*; D008956:Models, Chemical; D015394:Molecular Structure; D043942:Nanotubes; D011108:Polymers / Q000737:chemistry*; D012997:Solvents / Q000737:chemistry*; D013237:Stereoisomerism; D013816:Thermodynamics
chemical_list: D046911:Macromolecular Substances; D011108:Polymers; D012997:Solvents