PEDOT: TOS with PEG: A biofunctional surface with improved electronic characteristics

Leslie H. Jimison, Adel Hama, Xenofon Strakosas, Vanessa Armel, Dion Khodagholy, Esma Ismailova, George G. Malliaras, Bjorn Winther Jensen, Róisín M. Owens*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

47 Citations (Scopus)


Devices based on conducting polymers offer great promise for interfacing with cells. Here, we use vapour phase polymerisation to create a biofunctional composite material of the conducting polymer poly(3,4-ethylenedioxythiophene): tosylate (PEDOT:TOS) and the biologically relevant poly(ethylene glycol) (PEG). On the addition of PEG, electroactivity of the PEDOT is maintained, conductivity is increased, and its performance as the active material in a transistor is unaffected. Both direct and indirect biocompatibility tests prove that PEDOT:TOS and PEDOT:TOS:PEG are biocompatible and nontoxic to mammalian cells. A functionalised PEG (PEG(COOH)) was additionally introduced into PEDOT:TOS to showcase the potential of this material for use in applications requiring biofunctionalisation.

Original languageEnglish
Pages (from-to)19498-19505
Number of pages8
JournalJournal of Materials Chemistry
Issue number37
Publication statusPublished - 2012 Oct 7
Externally publishedYes

ASJC Scopus subject areas

  • Materials Chemistry
  • Chemistry(all)


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