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 (C-1 to C-8, C-10, C-12, C-14, C-16, C-18). C-1 to C-5 homologues are nonliquid crystal, C-6 to C-18 homologues display smectic and nematic mesophase enantiotropically manner except C-5 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 H-1 Nuclear magnetic resonance [NMR] spectroscopy. The mesomorphic properties of these compounds were observed by optical polarized light microscopy (POM) and differential scanning calorimetry (DSC). [GRAPHICS]