A modified route to unsymmetrically substituted triphenylenes, new functionalised derivatives and twins, and the smallest reported triphenylene mesogen

Andrew N. Cammidge (Lead Author), Rebecca J. Turner, Rhoda D. Beskeni, Tahani Almutairi

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5 Citations (Scopus)
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Abstract

We report the unexpected observation of columnar mesophase formation in a simple 2,7-dibromotetramethoxytriphenylene – by far the most lightly substituted discotic mesogen in this class. This derivative was prepared alongside the 3,6-dibromotriphenylene isomer to demonstrate an alternative, modified synthetic strategy that permits late-stage interchange of alkyl chain substituents. The new method is employed alongside the original route to deliver several new materials, including a conjugated ferrocene-triphenylene-ferrocene triad, a BODIPY-triphenylene-BODIPY triad and a new nematic twin linked through imine bridges.
Original languageEnglish
Pages (from-to)2018-2028
Number of pages11
JournalLiquid Crystals
Volume44
Issue number12-13
Early online date29 Jun 2017
DOIs
Publication statusPublished - 2017

Keywords

  • John Goodby
  • Triphenylenes
  • Discotics
  • Synthesis
  • Functionalisation

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