title: Optically active helical substituted polyacetylenes showing reversible helix inversion in emulsion and solution state.
abstract: This Communication reports two substituted polyacetylenes that can adopt helical structures of preferential screw sense in both emulsion (nanoparticle) and solution; however, the handedness of the macromolecular helices is just opposite in the two states. More interestingly, the helical screw sense of the polymers demonstrated a reversible transition between the two states. The unprecedented findings are of significant importance for acquiring new insights into helical polymers and for developing novel advanced chiral materials.
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: Yingying
authors.initials: Y
authors.lastname: Huang
authors.forename: Yuanyuan
authors.initials: Y
authors.lastname: Zhang
authors.forename: Wantai
authors.initials: W
authors.lastname: Yang
authors.forename: Jianping
authors.initials: J
authors.lastname: Deng
mesh_terms: D001596:Benzylamines / Q000737:chemistry; D002942:Circular Dichroism; D004655:Emulsions; D053279:Polyynes / Q000737:chemistry*; D012996:Solutions; D013237:Stereoisomerism; D014508:Urea / Q000031:analogs & derivatives / Q000737:chemistry
chemical_list: D001596:Benzylamines; D004655:Emulsions; D012996:Solutions; D053279:Polyynes; D014508:Urea