title: Well-Defined Polymers Bearing Pendent Alkene Functionalities via Selective RAFT Polymerization.
abstract: A facile synthetic approach for the preparation of well-defined (co)polymers bearing pendent alkene functionalities was established by selective reversible addition-fragmentation chain transfer (RAFT) (co)polymerization. A divinyl monomer 4-(3'-buten-1'-oxy)-2,3,5,6-tetrafluorostyrene (1) with a styrenyl group and a pendent alkene group was synthesized. Due to a very high reactivity of the styrenyl group relative to the alkene group in 1, functional fluoro(co)polymers with both well-defined structures and pendent alkene groups were prepared by RAFT polymerizations of 1 and copolymerization of 1 with pentafluorostyrene (PFS). Alkene-functionalized diblock copolymers were also prepared by RAFT copolymerization of 1 with PFS or styrene, extending from a poly(styrene-alt-maleic anhydride) macro-chain transfer agent. Hydrolysis and ammonolysis of these copolymers resulted in amphiphilic diblock fluorocopolymers with alkene-functionalized hydrophobic segments, which were shown to form internally-functionalized micelles in THF-water.
authors.affiliation: Department of Chemistry and Department of Radiology, Washington University, Saint Louis, MO 63130-4899.
authors.forename: Jun
authors.initials: J
authors.lastname: Ma
authors.forename: Chong
authors.initials: C
authors.lastname: Cheng
authors.forename: Guorong
authors.initials: G
authors.lastname: Sun
authors.forename: Karen L
authors.initials: KL
authors.lastname: Wooley