Synthesis and characterisation of thieno[3,2-b]thiophene-based linear shaped liquid crystals

Jiuchao Dong, Kohsuke Kawabata, Takahiro Seino, Fan Yang, Hiromasa Goto

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


A series of thieno[3,2-b]thiophene-based liquid crystalline molecules has been synthesised. To investigate the effects of alkyl substituent groups and structure of mesogenic cores, eight kinds of thieno[3,2-b]thiophene-based molecules containing different alkyl substituent groups and mesogenic cores have been synthesised. These molecules were characterised by differential scanning calorimetry, polarising optical microscopy, ultraviolet-visible absorption spectroscopy, fluorescence spectroscopy, cyclic voltammetry and polarised fluorescence spectroscopy. The results indicated that the thieno[3,2-b]thiophene-based donor-acceptor-donor (D-A-D) type molecules showed the presence of a smectic A phase. Changes in the length of alkyl substituents and mesogenic cores affected the phase transitions, optical and electrochemical properties of the molecules.

Original languageEnglish
Pages (from-to)1455-1465
Number of pages11
JournalLiquid Crystals
Issue number11
Publication statusPublished - 2013 Nov 1
Externally publishedYes


  • donor-acceptor-donor structure
  • linear shaped liquid crystal
  • thieno[3,2-b]thiophene

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics


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