Dithienosilole- and dibenzosilole-thiophene copolymers as semiconductors for organic thin-film transistors

Hakan Usta, Gang Lu, Antonio Facchetti, Tobin J. Marks

Research output: Contribution to journalArticlepeer-review

303 Citations (Scopus)


The synthesis and physicochemical properties of a new class of thiophene/arenesilole-containing π-conjugated polymers are reported. Examples of this new polymer class include the following: poly(2,5-bis(3′,3′′-dihexylsilylene-2′,2′′-bithieno)thiophene) (TS6T1), poly(2,5′-bis(3′′,3′″-dihexylsilylene-2′′,2′″-bithieno)bithiophene) (TS6T2), poly(2,5′-bis(2′′,2′″-dioctylsilylene-1′′,1′″-biphenyl)thiophene) (BS8T1), and poly(2,5′-bis(2′′,2′″-dioctylsilylene-1′′,1′″-biphenyl)bithiophene) (BS8T2). Organic field-effect transistors (OFETs) with hole carrier mobilities as high as 0.02-0.06 cm2/V s in air, low turn-on voltages, and current on/off ratios >105-106 are fabricated using solution processing techniques with the above polymers as the active channel layer. OFETs based on this polymer class exhibit excellent ambient operational stability.

Original languageEnglish
Pages (from-to)9034-9035
Number of pages2
JournalJournal of the American Chemical Society
Issue number28
Publication statusPublished - Jul 19 2006

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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