Work

Well-Defined Polymers Bearing Pendent Alkene Functionalities via Selective RAFT Polymerization

Year: 2008

Type: article

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.

Source: Macromolecules

DOI: 10.1021/ma802057u

Authors: Jun Ma, Chong Cheng, Guorong Sun, Karen L. Wooley

Institutions: Washington University in St. Louis, University at Buffalo, State University of New York

Language: English

Topic: Advanced Polymer Synthesis and Characterization

Subfield: Organic Chemistry

Field: Chemistry

Domain: Physical Sciences

Open Access status: green

Funder: National Heart, Lung, and Blood Institute

Award: Integrated Nanosystems for Diagnosis and Therapy