Poly(p-phenylenes) with well-defined side chain polymers |
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| Authors: | Ioan Cianga Yesim Hepuzer Yusuf Yagci |
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| Affiliation: | 1. On leave from “Petru Poni” Institute of Macromolecular Chemistry, Iasi, Romania;2. Istanbul Technical University, Department of Chemistry, Maslak, Istanbul, 80626, Turkey |
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| Abstract: | 1,4-Dibromo-2,5-bis(bromomethyl)benzene and benzene-2,5-dibromomethyl-1,4-bis(boronic acid propanediol diester) were used as bifunctional initiators in Atom Transfer Radical Polymerization (ATRP) of styrene or in cationic ring opening polymerization (CROP) of tetrahydrofuran in conjunction with CuBr /2,2'-bipyridine or AgSbF6, respectively. The resulting well-defined macromonomers with low polydispersities, bearing functional groups as bromine or boronic ester were used in Suzuki or Yamamoto type couplings, leading to poly(p-phenylene)s (PPPs) with polystyrene (PSt), polytetrahydrofuran (PTHF) or alternating PSt/PTHF side chains. The new polymers were characterized by GPC, 1H-NMR, 13C-NMR, IR and UV analysis. Thermal behavior of the precursors PSt or PTHF macromonomers and the final polyphenylenes were investigated by TGA and DSC analyses and compared. |
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