Effects of iron(III) p-toluenesulfonate hexahydrate oxidant on the growth of conductive poly(3,4-ethylenedioxythiophene) (PEDOT) nanofilms by vapor phase polymerization
Abstract
Study of the effects of evaporation time and oxidant concentration on the polymerization rate and final thickness of poly(3,4-ethylenedioxythiophene) (PEDOT) films found that the polymerization was chemical reaction limited, and that the final film thickness was linearly dependent on oxidant concentration. The influence of spin-coated iron(III) p-toluenesulfonate hexahydrate (Fe(PTS)3) oxidant solution on the polymerization and resulting PEDOT structures was also investigated. Spin-coated low-density (1.35 g/cm 3) Fe(PTS)3 oxidant solution, consisting of highly anisotropic paracystalline structures, provided open frameworks for the growth of conducting polymers, leading to a-axis oriented paracrystalline PEDOT films. Polymerization proceeded through the oxidant framework, increasing the density of PEDOT-filled oxidant solution to 2.01 g/cm3 with negligible change of thickness. Furthermore, the formation of a surface organic layer, as a result of spinning, promoted uniform and smooth PEDOT films. © 2011 Elsevier B.V. All rights reserved.
Publication Title
Synthetic Metals
Recommended Citation
Ali, M., Kim, H., Lee, C., Nam, H., & Lee, J. (2011). Effects of iron(III) p-toluenesulfonate hexahydrate oxidant on the growth of conductive poly(3,4-ethylenedioxythiophene) (PEDOT) nanofilms by vapor phase polymerization. Synthetic Metals (13-14), 1347-1352. https://doi.org/10.1016/j.synthmet.2011.04.036
