Here is presented the efficient synthesis of two thiophene derivatives and their study as components in donor-acceptor columnar liquid crystals.  Specifically, benzodithiophene and benzotrithiophene were each synthesized by halogen-selective Sonogashira coupling of 1-octyne chains do a highly substituted benzene core. This was followed by treated with sodium sulfide nonahydrate, to form the aromatic heterocycle.  These electron-rich molecules were then combined with complementary electron-poor aromatics to form novel columnar liquid crystals.    

Multiple thiophene-fused aromatic compounds as electron-donor columnar liquid crystals

243rd National Meeting (2012)

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