Molecular Crystals and Liquid Crystals p. 62 - 75 (2017)
Update date:2022-08-24
Topics:
Sharma, Vinay S.
Patel
The mesomorphic properties of linear chalconyl ester homologous series can be tuned in a predictable fashion with tail groups (–OC5H11) substituents on the terminal side and nitro group substitute at lateral position. Novel series consisted 13 members (C1 to C8, C10, C12, C14, C16, C18). C1 to C5 homologues are nonliquid crystal, C6 to C18 homologues display smectic and nematic mesophase enantiotropically manner except C5 homologue, which show only nematogenic mesophase. The texture of the nematic mesophase is of fan-shaped, Schlieren, and nematic droplets type. All these compounds were characterized by elemental analyses and spectroscopic techniques such as [FTIR] and 1H Nuclear magnetic resonance [NMR] spectroscopy. The mesomorphic properties of these compoundswere observed by optical polarized light microscopy (POM) and differential scanning calorimetry (DSC).
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