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Ring-Opening Copolymerization of 10-Methylene-9,10- Dihydroanthryl-9-Spirophenylcyclopropane via Free Radical and RAFT Processes

Mori, Hideharu ; Masuda, Shigeki ; Endo, Takeshi

Macromolecules, 2008-02, Vol.41 (3), p.632-639 [Periódico revisado por pares]

Washington, DC: American Chemical Society

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  • Título:
    Ring-Opening Copolymerization of 10-Methylene-9,10- Dihydroanthryl-9-Spirophenylcyclopropane via Free Radical and RAFT Processes
  • Autor: Mori, Hideharu ; Masuda, Shigeki ; Endo, Takeshi
  • Assuntos: Applied sciences ; Exact sciences and technology ; Organic polymers ; Physicochemistry of polymers ; Polymers with particular properties ; Preparation, kinetics, thermodynamics, mechanism and catalysts
  • É parte de: Macromolecules, 2008-02, Vol.41 (3), p.632-639
  • Descrição: A cyclic monomer, 10-methylene-9,10-dihydroanthryl-9-spirophenylcyclopropane (MDS), and styrene (St) were copolymerized by conventional radical polymerization and reversible addition−fragmentation chain transfer (RAFT) polymerization. In both cases, NMR analyses of the resulting copolymers indicated that the ring-opening polymerization proceeded predominantly to give copolymers containing anthracene units in the main chain. The copolymers having relatively high MDS contents with narrow polydispersity (M w/M n < 1.2) were obtained by RAFT copolymerization in the presence of suitable chain transfer agents. Free radical copolymerizations of MDS and commercial monomers, such as 4-vinylpyridine (4VP), acrylonitrile, n-butyl acrylate, and methyl methacrylate, were studied using 2,2‘-azobis(isobutyronitrile) as an initiator. The resulting copolymers absorbed light around 260 nm and 330−430 nm, regardless of the nature of the comonomer. Fluorescent peaks of poly(MDS-co-St) were almost the same as those of poly(MDS), whereas poly(MDS-co-4VP) showed an extremely broad peak from 420 to 640 nm with a maximum at 530 nm. These copolymers were thermally stable above 300 °C under nitrogen.
  • Editor: Washington, DC: American Chemical Society
  • Idioma: Inglês
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