PEDOT:PSS or Poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) is a polymer mixture of two ionomers. One component in this mixture is made up of sodium polystyrene sulfonate which is a sulfonated polystyrene. Part of the sulfonyl groups are deprotonated and carry a negative charge. The other component poly(3,4-ethylenedioxythiophene) or PEDOT is a conjugated polymer and carries positive charges and is based on polythiophene. Together the charged macromolecules form a macromolecular salt. It is used as a transparent, conductive polymer with high ductility in different applications. For example, AGFA coats 200 million of photographic film per year with a thin extensively stretched layer of virtually transparent and colorless PEDOT:PSS as an antistatic agent to prevent electrostatic discharges during production and normal film use, independent of humidity conditions. Special PEDOT:PSS inks and formulations were developed for different coating and printing processes. Water based PEDOT:PSS inks are mainly used in slot die coating, flexography, rotogravure and inkjet printing. Commercially available PEDOT:PSS products are produced by H.C. Starck with the tradename Clevios and by AGFA with the trade name Orgacon.
Source: Wikipedia
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