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A New Dithiophene Fused p-Phenylene Vinylene Conducting Polymer. Synthesis and Study

  • Martin Pomerantz (a1), Jiping Wang (a1), Seeyearl Seong (a1), Kyle P. Starkey (a1), Long Nguyen (a1) and Dennis S. Marynick (a1)...

Abstract

A new conducting polymer, poly (benzo[1,2-b:4,5-b′]dithiophene-4,8-diyl vinylene) (1), has been prepared by pyrolysis of a precursor polymer 2, which, in turn, was prepared by a multistep synthetic sequence (Scheme 1). The polymer has a UV-vis spectral maximum at 501 nm (2.48 eV), band-gap (band edge) of 1.92 eV and with FeC?3 doping a conductivity of 15 S cm1. Quantum Mechanical calculations using PRDDO, ab-initio and modified extended Hiickel Methodology on the Monomers, trimers and polymers, both aromatic and quinoid, provided structures and an absorption maximum band-gap which is consistent with either a planar aromatic polymer or a polymer which has both aromatic and quinoid units.

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A New Dithiophene Fused p-Phenylene Vinylene Conducting Polymer. Synthesis and Study

  • Martin Pomerantz (a1), Jiping Wang (a1), Seeyearl Seong (a1), Kyle P. Starkey (a1), Long Nguyen (a1) and Dennis S. Marynick (a1)...

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