A novel chiral separation material: polymerized organogel formed by chiral gelators for the separation of D- and L-phenylalanine

✍ Scribed by Xinjian Fu; Yang Yang; Ningxia Wang; Hong Wang; Yajiang Yang

• Publisher: John Wiley and Sons
• Year: 2007
• Tongue: English
• Weight: 269 KB
• Volume: 20
• Category: Article
• ISSN: 0952-3499
• DOI: 10.1002/jmr.831

✦ Synopsis

Abstract

N‐Stearine‐N′‐stearyl‐L‐phenylalanine, a chiral compound, was synthesized and used as a gelator for the gelation of polymerizable solvents, such as ß‐hydroxyethyl methacrylate (HEMA), styrene, etc. The scanning electron microscope (SEM) images of the gelator aggregates show fibril‐like helices, typical chiral aggregates with diameters of 100–200 nm. The solvent molecules were immobilized by capillary forces in the three‐dimensional network structures of the organogels. The HEMA organogels containing crosslinker polyethylene glycol dimethacrylates (PEG200DMA) were subsequently polymerized by in situ UV irradiation. A porous polymerized organogels were obtained after removal of gelator aggregates through ethanol extraction. The chiral separation of D‐ and L‐phenylalanine was carried out by the adsorption of the polymerized organogels. The adsorption efficiency of L‐phenylalanine on the polymerized organogels was found to be dependent on the concentration of the gelator and crosslinker. Copyright © 2007 John Wiley & Sons, Ltd.