Abstract
Water-soluble electrically conductive polymer poly(3,4-ethylenedioxythiophene) (PEDOT) was synthesized by the enzymatic-catalyzed method using 3,4-ethylenedioxythiophene (EDOT) as monomer, poly(styrenesulfonate) (PSS) as water-soluble polyelectrolyte, horseradish peroxidase enzyme as catalyst, and hydrogen peroxide (H2O2) as oxidant. Fourier transform infrared spectra and UV–vis absorption spectra confirm the successful enzymatic-catalyzed polymerization of PEDOT. Dynamic light scattering data confirm the formation of a stable PEDOT:PSS aqueous dispersion. The thermo gravimetric data show that the obtained PEDOT is stable over a fairly high range of temperatures. The atomic force microscopy height images show that the PEDOT:PSS aqueous dispersion can form excellent homogeneous and smooth films on various substrates by conventional solution processing techniques, which renders this PEDOT:PSS aqueous dispersion a very promising candidate for various application in electronic devices. This enzymatic polymerization is a new approach for the synthesis of optical and electrical active PEDOT polymer, which benefits simple setting, high yields, and environmental friendly route. Copyright © 2014 John Wiley & Sons, Ltd.
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