A series of chiral ester (S)-(-)-2-methylbutyl 4’-(4”-n-alkanoyloxybenzoyloxy)biphenyl-4-carboxylates possessing different length of alkyl chain have been isolated and their molecular structures were proposed via physical measurement and spectroscopy techniques. Phase transition temperatures and thermal parameters were obtained from differential scanning calorimetry. Observation under polarizing optical microscope revealed all the members of the series exhibiting fan shaped and helical line textures which can be assigned to the SmA and tilted SmC* phases, respectively. The influence of structural changes (core structure and terminal chain) on the mesomorphic properties is discussed.
Key words: Chiral liquid crystals, smectic A, smectic C*, structure-property relationship.
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