Polyanionic, alkylthiosulfate-based thiol precursors for conjugated polymer self-assembly onto gold and silver

Mario Kraft, Sylwia Adamczyk, Andreas Polywka, Kirill Zilberberg, Christ Weijtens, Jens Meyer, Patrick Goerrn, Thomas Riedl, Ullrich Scherf

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11 Citations (Scopus)

Abstract

Anionic, conjugated thiophene- and fluorene-based polyelectrolytes with alkylthiosulfate side chains undergo hydrolysis under formation of alkylthiol and dialkyldisulfide functions. The hydrolysis products can be deposited onto gold or silver surfaces by self-assembly from solutions of the anionic conjugated polyelectrolyte (CPE) precursors in polar solvents such as methanol. This procedure allows solution-based surface modifications of gold and silver electrodes using environmentally friendly solvents and enables the formation of conjugated polymer bilayers. The herein presented alkylthiosulfate-substituted CPEs are promising candidates for increasing the work function of gold and silver electrodes thus improving hole injection from such electrode assemblies into organic semiconductors.
Original languageEnglish
Pages (from-to)11758-11765
Number of pages8
JournalACS Applied Materials & Interfaces
Volume6
Issue number14
DOIs
Publication statusPublished - 23 Jul 2014
Externally publishedYes

Keywords

  • conjugated polyelectrolytes (CPE)
  • Bunte salts
  • self-assembly
  • cross-linking
  • charge injection interlayer
  • conjugated polymer bilayer

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