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Issue 2, 2016
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Mechanism of the biomolecular synthesis of PEDOT:PSS: importance of heme degradation by hydrogen peroxide

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Abstract

The use of biomolecules as oxidants for the synthesis of conducting polymers provides an important tool for the control of polymer properties. Using PEDOT: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 PEDOT: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.

Graphical abstract: Mechanism of the biomolecular synthesis of PEDOT:PSS: importance of heme degradation by hydrogen peroxide

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Article information


Submitted
19 Sep 2015
Accepted
16 Nov 2015
First published
26 Nov 2015

Biomater. Sci., 2016,4, 331-337
Article type
Paper

Mechanism of the biomolecular synthesis of PEDOT:PSS: importance of heme degradation by hydrogen peroxide

J. D. Morris, K. M. Wong, C. D. Peñaherrera and C. K. Payne, Biomater. Sci., 2016, 4, 331
DOI: 10.1039/C5BM00399G

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