Tailoring structure-property relationships in dithienosilole- benzothiadiazole donor-acceptor copolymers

Pierre Beaujuge, Wojciech Pisula, Nok Tsao Hoi, Stefan Ellinger, Klaus Müllen*, John R. Reynolds

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

209 Scopus citations

Abstract

(Figure Presented) Four new DTS-BTD copolymers (P1-P4) differing by the concentration of electron-donating and -withdrawing substituents along the backbone have been synthesized and characterized by 2D-WAXS and in bottom-contact FETs. While all copolymers can self-assemble into lamellar superstructures, only P2 and P4 show a propensity to π-stack. P4 exhibits a hole mobility as high as 0.02 cm2 V-1 s-1 in excellent agreement with the close π-stacking and lamellar distances found by structural analysis (0.36 and 1.84 nm, respectively) and absorbs homogenously across the entire visible spectrum as solar cell applications require.

Original languageEnglish (US)
Pages (from-to)7514-7515
Number of pages2
JournalJournal of the American Chemical Society
Volume131
Issue number22
DOIs
StatePublished - Jun 10 2009

ASJC Scopus subject areas

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

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