Low-dimensional arylacetylenes for solution-processable organic field-effect transistors

Assunta Marrocchi, Mirko Seri, Choongik Kim, Antonio Facchetti, Aldo Taticchi, Tobin J Marks

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Abstract

Synthesis, Characterization, and solution-processable organic field-effect transistor response of soluble low-dimensional two arylacetylene compounds, was reported. The compound was obtained in 90% yields by Pd/Cu catalyzed Sonogashira coupling bis(bromothienyl)-benzothiadiazole with 3,4-(bishexyloxy)- ethynylbenzene. The results show that the solid state spectra of both the compounds are red-shifted relative to the solution spectra, while a better degree of molecular π-conjugation in the solid state of J-aggregates is found. Semiconductors of both the compounds exhibit hole mobilities of approximately 0.07 cm 2 V -1 s -1 and 0.05 cm 2 V -1 s -1. The X-ray diffraction plots confirm the high crystallinity of both the compound films resulting in optimum TFT performance.

Original languageEnglish
Pages (from-to)2592-2594
Number of pages3
JournalChemistry of Materials
Volume21
Issue number13
DOIs
Publication statusPublished - Jul 14 2009

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ASJC Scopus subject areas

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

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