Synthesis, characterisation and liquid crystalline behaviour of 4'-bromo-4-alkanoyloxy chalcone
DOI:
https://doi.org/10.54153/sjpas.2026.v8i1.1255Keywords:
Chalcone, Liquid crystal, Esterification, 4-BromoacetophenoneAbstract
This research investigates the occurrence of liquid crystalline properties in chalcone esters with different hydrocarbon chain lengths. These compounds with the general formula [Br-Ph-CO-CH=CH-Ph-O-CO-CnH2n+1] were synthesized by the reaction of 4-bromoacetophenone with 4-hydroxybenzaldehyde, and then the product was reacted with carboxylic acid halides in the presence of suitable catalysts. The compounds were characterized by FT-IR, 1H-NMR and 13C-NMR. The occurrence of liquid crystalline properties was confirmed by differential scanning calorimetry (DSC), and the texture morphology was confirmed by polarized light microscopy (POM). Compounds A1, A7, and A9 were monomorphic, while compounds A8 and A10 were dimorphic, and the remaining compounds did not exhibit liquid crystalline properties.
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