Benzotrithiophene Co-polymers with high charge carrier mobilities in field-effect transistors

Bob C. Schroeder, Christian B. Nielsen*, Young Ju Kim, Jeremy Smith, Zhenggang Huang, James Durrant, Scott E. Watkins, Kigook Song, Thomas Anthopoulos, Iain Mcculloch

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

50 Scopus citations

Abstract

The successful design and synthesis of two novel benzo[1,2-b:3,4-b′: 5,6-d′]trithiophene-containing polymers is presented. The planar benzotrithiophene core induces strong aggregation effects in alternating co-polymers with both thiophene and thieno[3,2-b]thiophene. Co-monomer choice is found to play a crucial role in determining the backbone conformation, the interchain interactions, and the polymer solubility. Despite molecular disorder introduced by a branched solubilizing alkyl chain and a regiorandom polymerization of the asymmetric benzotrithiophene unit, these co-polymers exhibit hole mobilities as high as 0.24 cm2/(V s).

Original languageEnglish (US)
Pages (from-to)4025-4031
Number of pages7
JournalChemistry of Materials
Volume23
Issue number17
DOIs
StatePublished - Sep 13 2011

Keywords

  • Transistors
  • benzotrithiophene
  • conjugated polymers
  • holemobility

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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