Synthesis of a novel fused thiophene-thieno[3,2-b]thiophene-thiophene Donor Monomer and Co-polymer for Use in OPV and OFETs

Hugo Bronstein*, Raja Ashraf, Youngju Kim, Andrew J.P. White, Thomas Anthopoulos, Kigook Song, David James, Weimin Zhang, Iain Mcculloch

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

37 Scopus citations

Abstract

The synthesis of a novel fused hexacyclic electron rich monomer incorporating thieno[3,2-b]thiophene is reported and characterized by single crystal X-ray diffraction. Suzuki co-polymerization with benzothiadiazole (BT) afforded a novel low band-gap polymer P4TBT with high molecular weights and good solution processability. Bulk heterojunction solar cell devices using the P4TBT and [70]PCBM gave power conversion efficiencies of 2.5%. Top-gate, bottom-contact field effect transistors (FETs) using P4TBT displayed high hole mobilities of 0.07 cm 2 · Vs -1 demonstrating the suitability of the novel monomer and polymer for use in high performing organic electronic devices.

Original languageEnglish (US)
Pages (from-to)1664-1668
Number of pages5
JournalMacromolecular Rapid Communications
Volume32
Issue number20
DOIs
StatePublished - Oct 18 2011

Keywords

  • conjugated polymers
  • solar cell
  • transistors

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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