DefinePK

Abstract

Synthesis and characterization of a novel series of inter molecular hydrogen bonded liquid crystals are done. Eleven hydrogen bonded complexes are characterized by the polarizing microscope (POM) attached with a hot stage, Differential scanning calorimeter (DSC) and Fourier transformed infrared spectroscopy (IR). The effect of chain length on the phase transitions is discussed by POM and DSC, respectively. The complexes having chain number n=7-12 exhibits nematic, smectic-B and smectic-G. In this case both smectic-B and smectic-G phases are induced by the quenching of smectic-C phase. Along with DSC results, we have done textural analysis using image processing techniques and found that transition temperatures in both the cases are almost identical. We reported corresponding simulated statistical analysis data in comparison with DSC measurements available.