title: Emulsification-Induced Homohelicity in Racemic Helical Polymer for Preparing Optically Active Helical Polymer Nanoparticles.
abstract: Optically active nano- and microparticles have constituted a significant category of advanced functional materials. However, constructing optically active particles derived from synthetic helical polymers still remains as a big challenge. In the present study, it is attempted to induce a racemic helical polymer (containing right- and left-handed helices in equal amount) to prefer one predominant helicity in aqueous media by using emulsifier in the presence of chiral additive (emulsification process). Excitingly, the emulsification process promotes the racemic helical polymer to unify the helicity and directly provides optically active nanoparticles constructed by chirally helical polymer. A possible mechanism is proposed to explain the emulsification-induced homohelicity effect. The present study establishes a novel strategy for preparing chirally helical polymer-derived optically active nanoparticles based on racemic helical polymers.
authors.affiliation: State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China.|College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China.
authors.forename: Biao
authors.initials: B
authors.lastname: Zhao
authors.affiliation: State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China.|College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China.
authors.forename: Jinrui
authors.initials: J
authors.lastname: Deng
authors.affiliation: State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China.|College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China.
authors.forename: Jianping
authors.initials: J
authors.lastname: Deng
mesh_terms: D002942:Circular Dichroism; D004655:Emulsions / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008823:Micelles; D046529:Microscopy, Electron, Transmission; D053758:Nanoparticles / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D013053:Spectrophotometry; D017550:Spectroscopy, Fourier Transform Infrared; D013237:Stereoisomerism
chemical_list: D004655:Emulsions; D008823:Micelles; D011108:Polymers
keywords: emulsification; helical polymers; micelles; optically active nanoparticles