Comparative optoelectronic study between copolymers of peripherally alkylated dithienosilole and dithienogermole

Zhuping Fei, Youngju Kim, Jeremy Smith, Ester Buchaca Domingo, Natalie Stingelin, Martyn A. McLachlan, Kigook Song, Thomas Anthopoulos, Martin Heeney*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

37 Scopus citations

Abstract

Here we report a simple methodology for the synthesis of dithienosilole and dithienogermole monomers in which the necessary solubilizing long chain alkyl groups are incorporated into the peripheral 3,5-positions of the fused ring. We report four novel monomers in which methyl or butyl groups are attached to the bridging Si and Ge atom. Copolymers with bithiophene were synthesized by a Stille polymerization in high molecular weight. We report the optical, electrical, electrochemical and morphological properties of the resulting polymers. We find that the nature of the bridging heteroatom (Si or Ge) has only a minor influence on these properties, whereas the nature of the alkyl chain attached to the bridging atom is found to have a much larger effect.

Original languageEnglish (US)
Pages (from-to)735-742
Number of pages8
JournalMacromolecules
Volume45
Issue number2
DOIs
StatePublished - Jan 24 2012

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

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