Poly(p-phenylenes) with well-defined side chain polymers

Cianga I. , HEPUZER Y., YAGCI Y.

MACROMOLECULAR SYMPOSIA, vol.183, pp.145-157, 2002 (Journal Indexed in SCI) identifier identifier


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, H-1-NMR, C-13-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.