Molecularly imprinted cholesteric materials for enhanced enantiomeric separation. (14th March 2022)

• Record Type: Journal Article
• Authors: Palaprat, Guillaume; Mingotaud, Anne-Françoise; Langevin, Dominique; Mauzac, Monique; Marty, Jean-Daniel
• Is Part Of: Polymer. Volume 243(2022)
• Publication Date: 2022-03-14
• Subjects: Liquid crystalline polymer -- Molecularly imprinted -- Cholesteric -- Enantiomer separation; Polymers -- Periodicals; Polymerization -- Periodicals; Polymères -- Périodiques; Polymérisation -- Périodiques; 547.7
• DOI: 10.1016/j.polymer.2022.124654
• Languages: English
• ISSNs: 0032-3861

Abstract

Abstract: A cholesteric network exhibiting two levels of chirality, i.e. a macroscopic chirality issued from cholesteric structure and a local chirality generated by the presence of chiral imprinted sites, was synthesized. The specific role of each level of chirality in enantio-recognition phenomena was investigated in gaz phase by comparing their sorption properties towards two enantiomers of a chiral amine. Both levels of chirality improves the separation, the chiral environment having a lower effect than the presence of chiral-specific molecular cavities. Graphical abstract: Image 1 Highlights: Liquid crystalline polymers with two level of chirality, i.e. molecular and supramolecular, were synthesized. Both levels of chirality improve the enantio-recognition of a chiral amine. Recognition is mostly promoted by the presence of molecularly imprinted sites.