Functionalized assembly of solid membranes for chiral separation using polyelectrolytes and chiral ionic liquid. Issue 12 (7th October 2013)

• Record Type: Journal Article
• Authors: Meng, Hong; Li, Sumin; Xiao, Ling; Li, Chunxi
• Is Part Of: AIChE journal. Volume 59:Issue 12(2013:Dec.)
• Page Start: 4772
• Page End: 4779
• Publication Date: 2013-10-07
• Subjects: Chemical engineering -- Periodicals; Génie chimique -- Périodiques; 660.28
• DOI: 10.1002/aic.14227
• Languages: English
• ISSNs: 0001-1541

Abstract

<abstract abstract-type="main"> <title> <x xml:space="preserve">Abstract</x> </title> <p>The successful assembly of a new solid membrane for chiral separation, assembled via the formation of complexes of a polyelectrolyte and β‐cyclodextrins chiral ionic liquid (β‐CD‐IL) is presented. Before the assembly, the β‐CD‐IL, used as a chiral selector, was synthesized and characterized by ¹H NMR. To tune the chiral separation capability of the solid membrane, β‐CD‐IL was subsequently immobilized on to porous supporting membranes through layer‐by‐layer assembly of the β‐CD‐IL and polyelectrolytes. The resulting membrane was used in the chiral separation of D, L‐tryptophan racemate enantiomer. The membrane structure and surface morphologies were systematically analyzed by FT‐IR, UV–vis, SEM and AFM. The effects of layer number on the chiral separation were investigated. It was found that the more β‐CD‐IL was immobilized on the membranes; the higher average separation factor could be obtained. The stability of the multilayer membrane was improved by coating with crosslinked polymer layer. © 2013 American Institute of Chemical Engineers <italic>AIChE J</italic>, 59: 4772–4779, 2013</p> </abstract>