Influence of anionic and cationic polyelectrolytes on the conductivity and morphology of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) films

A1 Journal article (refereed)

Internal Authors/Editors

Publication Details

List of Authors: Dimitar Valtakari, Roger Bollström, Martti Toivakka, Jarkko J. Saarinen
Publication year: 2015
Journal: Thin Solid Films
Journal acronym: THIN SOLID FILMS
Volume number: 590
Start page: 170
End page: 176
Number of pages: 7
ISSN: 0040-6090
eISSN: 1879-2731


Conductivity of the poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) strongly depends on the film morphology, which can be altered by the presence of polyelectrolytes. Aqueous dispersion of PEDOT:PSS was studied with anionic sodium polyacrylate (PA) and cationic poly(dimethyldiallylammonium chloride) (pDADMAC) polyelectrolytes that are typically used in papermaking as retention aids and dispersing agents in the paper pigment coating formulations. Spin-coated PEDOT:PSS films on a PA coated glass formed non-uniform layers with lowered conductivity compared to the reference PEDOT:PSS films on a clean glass substrate. On contrary, spin-coated PEDOT:PSS on a pDADMAC coated glass formed uniform layers with good conductivity. These results point out the importance of surface chemistry when using renewable and recyclable paper-based substrates with the PEDOT:PSS films.


Conductivity, Paper, PEDOT:PSS, Printed functionality

Last updated on 2020-12-08 at 07:50