title: Microspheres consisting of optically active helical substituted polyacetylenes: preparation via suspension polymerization and their chiral recognition/release properties.
abstract: Cross-linked microspheres consisting of optically active helical substituted polyacetylenes are reported. For preparing the microspheres, substituted polyacetylene copolymers with pendent polymerizable CC bonds are first prepared and then used as macromonomers to copolymerize with acrylates via suspension polymerization, providing cross-linked microspheres. The helical polymer segments render the microspheres with optical activity, whereas the acrylate-based polymers afford the swelling property. CD and UV-vis spectra demonstrate the optical activity of the microspheres. The microspheres preferably adsorb (R)-(+)-1-phenylethylamine, (R)-(+)-N-benzyl-1-phenylethylamine, and Boc-D-alanine, whereas released Boc-L-alanine rather more rapidly than its enantiomer.
authors.affiliation: State Key Laboratory of Chemical Resource Engineering, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
authors.forename: Bo
authors.initials: B
authors.lastname: Chen
authors.forename: Ci
authors.initials: C
authors.lastname: Song
authors.forename: Xiaofeng
authors.initials: X
authors.lastname: Luo
authors.forename: Jianping
authors.initials: J
authors.lastname: Deng
authors.forename: Wantai
authors.initials: W
authors.lastname: Yang
mesh_terms: D008863:Microspheres; D015394:Molecular Structure; D053279:Polyynes / Q000138:chemical synthesis / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet
chemical_list: D053279:Polyynes