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Low and High Molecular Mass Dithienopyrrole–Naphthalene Bisimide Donor–Acceptor Compounds: Synthesis, Electrochemical and Spectroelectrochemical Behaviour

  • Cardinal Stefan Wyszynski University
  • Warsaw University of Technology
  • Linköping University
  • Silesian University of Technology
  • Johannes Kepler University Linz
  • Polish Academy of Sciences

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

Two low molecular weight electroactive donor–acceptor–donor (DAD)-type molecules are reported, namely naphthalene bisimide (NBI) symmetrically core-functionalized with dithienopyrrole (NBI-(DTP)2) and an asymmetric core-functionalized naphthalene bisimide with dithienopyrrole (DTP) substituent on one side and 2-ethylhexylamine on the other side (NBI-DTP-NHEtHex). Both compounds are characterized by low optical bandgaps (1.52 and 1.65 eV, respectively). NBI-(DTP)2undergoes oxidative electropolymerization giving the electroactive polymer of ambipolar character. Its two-step reversible reduction and oxidation is corroborated by complementary EPR and UV/Vis–NIR spectroelectrochemical investigations. The polymer turned out to be electrochemically active not only in aprotic solvents but also in aqueous electrolytes, showing a distinct photocathodic current attributed to proton reduction. Additionally, poly(NBI-(DTP)2) was successfully tested as a photodiode material.

Original languageEnglish
Pages (from-to)2839-2851
Number of pages13
JournalChemistry - A European Journal
Volume23
Issue number12
DOIs
Publication statusPublished - 24 Feb 2017

Keywords

  • dithienopyrrole
  • electrochemistry
  • naphthalene bisimide
  • photodiode
  • polymerization

ASJC Scopus subject areas

  • Catalysis
  • General Chemistry
  • Organic Chemistry

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