title: Catalytic Polymerizations of Hydrophobic, Substituted, Acetylene Monomers in an Aqueous Medium by Using a Monomer/Hydroxypropyl-β-cyclodextrin Inclusion Complex.
abstract: Ten hydrophobic, substituted, acetylene monomers were examined as to their abilities to form an inclusion complex with hydroxypropyl-β-cyclodextrin (HPCD). Only the monomers with suitable substitutents were found to form the monomer/HPCD complex, which was identified by NMR, FTIR, and UV-vis spectroscopy. Polymerizations of the monomers were successfully carried out in aqueous solution by using the prepared monomer/HPCD inclusion complex and by using a water-soluble Rh-based catalyst, [Rh(cod)(2) BF(4) ] or [Rh(nbd)(H(2) O)OTs]. Such polymerizations provided high-yield (>90%) polymers with a cis content of approximately 100%. The as-prepared polymers could take an ordered helical conformation, just like their counterparts obtained in organic solvents.
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: Lei
authors.initials: L
authors.lastname: Ding
authors.forename: Xuefeng
authors.initials: X
authors.lastname: Jiao
authors.forename: Jianping
authors.initials: J
authors.lastname: Deng
authors.forename: Weiguo
authors.initials: W
authors.lastname: Zhao
authors.forename: Wantai
authors.initials: W
authors.lastname: Yang