title: Mechanism of the biomolecular synthesis of PEDOT:PSS: importance of heme degradation by hydrogen peroxide.
abstract: The use of biomolecules as oxidants for the synthesis of conducting polymers provides an important tool for the control of polymer properties. Using
  PSS as a representative conducting polymer, we compare a set of heme proteins (soybean peroxidase, cytochrome c, and horseradish peroxidase) used as oxidants. The resulting
  PSS was characterized with visible and near IR spectroscopy, Fourier transform infrared spectroscopy, electron spin resonance spectroscopy, and four point probe conductivity measurements. We find that the relative concentrations of bipolarons and polarons vary as a function of the protein used for polymerization. We then show that heme degradation by hydrogen peroxide plays a critical role in determining polymer properties.
authors.affiliation: School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, USA. christine.payne@chemistry.gatech.edu and Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, Georgia 30332, USA.
authors.forename: J D
authors.initials: JD
authors.lastname: Morris
authors.affiliation: School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, USA. christine.payne@chemistry.gatech.edu and Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, Georgia 30332, USA.
authors.forename: K M
authors.initials: KM
authors.lastname: Wong
authors.affiliation: School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, USA. christine.payne@chemistry.gatech.edu and Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, Georgia 30332, USA.
authors.forename: C D
authors.initials: CD
authors.lastname: Peñaherrera
authors.affiliation: School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, USA. christine.payne@chemistry.gatech.edu and Petit Institute for Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, Georgia 30332, USA.
authors.forename: C K
authors.initials: CK
authors.lastname: Payne
mesh_terms: D001669:Biochemical Phenomena; D004578:Electron Spin Resonance Spectroscopy / Q000379:methods; D005785:Gene Conversion; D006420:Hemeproteins / Q000737:chemistry*; D006735:Horseradish Peroxidase / Q000737:chemistry* / Q000378:metabolism; D006861:Hydrogen Peroxide / Q000737:chemistry* / Q000378:metabolism; D016877:Oxidants / Q000737:chemistry*; D058105:Polymerization; D011137:Polystyrenes / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared / Q000379:methods; D019265:Spectroscopy, Near-Infrared / Q000379:methods; D013876:Thiophenes / Q000737:chemistry*
chemical_list: D006420:Hemeproteins; D016877:Oxidants; D011137:Polystyrenes; D013876:Thiophenes; C533756:poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate); D006861:Hydrogen Peroxide; D006735:Horseradish Peroxidase