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Abstract
A new method is proposed for the physical investigation of hydrogen-bonded liquid crystals based on eigen value analysis and statistical covariance. Mesogenic p,n-alkyl benzoic acid (nBA) where n = 5–10 and non-mesogenic heptyl p-hydroxybenzoate (7HB) are used to obtain the hydrogen bonded liquid crystals. Intermolecular interactions result in the hydrogen bond between the proton donor (COOH) of nBA and proton acceptor (OH) of 7HB. Molecular interactions involving the various functional groups are studied by exploring the Fourier transform infrared spectral data to the maximum eigen value analysis. Furthermore, maximum eigen value of the liquid crystal textures recorded as a function of temperature is used to identify the mesomorphic characteristics of the samples. Results obtained from this method are in good agreement with literature.