2,5-bis(2-octyldodecyl)pyrrolo[3,4-c]pyrrole-1,4-(2H,5H)-dione-based donor-acceptor alternating copolymer bearing 5,5′-Di(thiophen-2-yl)-2, 2′-biselenophene exhibiting 1.5 cm 2·V -1·s -1 hole mobility in thin-film transistors

Jae Seung Ha, Kyung Hwan Kim, Dong Hoon Choi

Research output: Contribution to journalArticle

303 Citations (Scopus)

Abstract

A novel diketopyrrolopyrrole-based π-conjugated copolymer P(DPP-alt-DTBSe), 5, and a known copolymer P(DPP-alt-QT), 4, have been synthesized in 80-90% yield using the Stille coupling reaction. The molecular weights of 4 and 5 are 58 781 and 19 271 g/mol, respectively, with polydispersity values of 3.25-3.35. A relatively small band gap of 1.32-1.39 eV and excellent solubility in organic solvents were achieved in the two polymers. Thin-film transistors made of 5 exhibit outstanding performance (e.g., μ > 1.0-1.5 cm 2·V -1·s -1, I on/I off > 10 5-10 6) with a conventional n-octyltrichlorosilane-SiO 2 gate dielectric.

Original languageEnglish
Pages (from-to)10364-10367
Number of pages4
JournalJournal of the American Chemical Society
Volume133
Issue number27
DOIs
Publication statusPublished - 2011 Jul 13

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ASJC Scopus subject areas

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

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