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An Assessment of the Effect of Synthetic and Doping Conditions on the Processability and Conductivity of Poly(3,4-ethylenedioxythiophene)/Poly(styrene sulfonic acid)

Citation

Diah, AWM and Quirino, JP and Belcher, W and Holdsworth, CI, An Assessment of the Effect of Synthetic and Doping Conditions on the Processability and Conductivity of Poly(3,4-ethylenedioxythiophene)/Poly(styrene sulfonic acid), Macromolecular Chemistry and Physics, 217, (17) pp. 1907-1916. ISSN 1022-1352 (2016) [Refereed Article]

Copyright Statement

Copyright 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

DOI: doi:10.1002/macp.201600165

Abstract

Poly(3,4-ethylenedioxythiophene)/poly(styrene sulfonic acid) (PEDOT/PSS) dispersions are synthesized via conventional oxidative polymerization under various synthetic (reaction times and formulations) and doping conditions (in situ and postpolymerization) with the introduction of dialysis as an additional purification step. Conductivities of films produced from these synthesized dispersions are one to three orders of magnitude higher than the equivalent commercial PEDOT/PSS reference film. In situ doped PEDOT/PSS dispersions give films that are more conductive than those doped postpolymerization. Optimum conductivity of 5.2 ± 0.7 S cm-1 is obtained from PEDOT/PSS dispersions (1:2.5 EDOT:PSS mass ratio) synthesized for 12 h with doping efficiency of 73%. Under these synthetic conditions, the film most likely has the optimal microstructure, i.e., optimal PEDOT chain length and ideal distribution and balance of PEDOT/PSS segments and free PSS chains, favoring charge transport and processability. Capillary electrophoresis is presented here as a novel method for measuring free and doped PSS in PEDOT/PSS dispersions.

Item Details

Item Type:Refereed Article
Keywords:characterisation
Research Division:Chemical Sciences
Research Group:Analytical Chemistry
Research Field:Separation Science
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Chemical Sciences
Author:Quirino, JP (Associate Professor Lito Quirino)
ID Code:114841
Year Published:2016
Funding Support:Australian Research Council (FT100100213)
Web of Science® Times Cited:1
Deposited By:Chemistry
Deposited On:2017-02-28
Last Modified:2017-10-30
Downloads:0

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