Abstract
ABSTRACTAn intermolecular hydrogen bond is formed between 4-undecyloxy benzoic acid (11BAO) and cholesteryl acetate (CHA) which has been confirmed by Fourier transform infrared (FTIR) spectroscopic studies. Phase transition temperatures and enthalpy values are experimentally evaluated by polarizing optical microscopic (POM) and differential scanning calorimetric (DSC) studies. An interesting feature in this paper is that the observation of wider thermal span of the mesogenic phases and decreased enthalpy values of all phases in the binary mixture compared to the individual mesogen. The resultant hydrogen bonded liquid crystal mixture complexes possess a Nematic phase with a high clearing point, and a low melting point compared to constituent in the complex.
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