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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jcsc/127/10/1831-1838

    • Keywords

       

      Schiff’s base; 1,3,4-oxadiazoles; 1,3,4-thiadiazoles; liquid crystals

    • Abstract

       

      Two series of bent shaped 1,3,4-oxadiazole/thiadiazole heterocyclic ring containing liquid crystalline (LC) compounds were synthesized and characterized by FT-IR, $^{1}_{}$H, $^{13}_{}$C-NMR and ESI-Mass spectro-scopic techniques. Liquid crystal properties were investigated by polarized optical microscopy and differential scanning calorimetry. All the compounds exhibited mesophases such as nematic, smectic A and smectic C phases. The liquid crystalline effects were ascertained by changing the central atom in the heterocyclic ring and by increasing the length of the terminal alkyloxy chains which bring considerable improvements on the mesomorphic properties. The absorption and emission spectral studies of all the compounds were investigated and confirmed.

    • Author Affiliations

       

      Chinnaiyan Selvarasu1 Palaninathan Kannan1

      1. Department of Chemistry, Anna University, Chennai 600 025, India

    • Dates

       
      Published
      October 2015
      Manuscript received
      26 December 2014
      Accepted
      7 September 2015

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