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Title: Synthesis and characterisation of some new chalcone liquid crystals
Authors: Srinivasa, H.T.
Kumar, Sandeep
Keywords: mesophase
smectic C
Issue Date: Oct-2017
Publisher: Taylor & Francis
Citation: Liquid Crystals, 2017, Vol.44, p 1506-1514
Abstract: A series of new chalcones with four aromatic rings is synthesised and characterised. The chemical structures of chalcones are evaluated by Fourier transform-infrared spectroscopy, elemental analysis, 1H and 13C nuclear magnetic resonance spectroscopic techniques. The compounds were investigated for liquid crystalline properties using differential scanning calorimetry and polarising optical microscopy with hot stage. The results indicate that the formation of mesophase type is dependent on the alkyl chain length at one end of the molecule. Compounds 9a–d with relatively shorter chains show SmA and nematic mesophases, whereas 9e–g exhibit SmC and SmA mesophases. Compound 9h having a cyano group at one end, exhibit SmA and nematic mesophases.
Description: Restricted Access.
ISSN: 0267-8292
1366-5855 (Online)
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Copyright: 2017 Taylor & Francis
Appears in Collections:Research Papers (SCM)

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