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Theory of rotatory dispersion of cholesteric liquid crystals
A theory is developed of the circular dichroism and rotatory power of thin films of cholesteric liquid crystals. It is an extension of the treatment for infinitely thick specimens discussed in a
Vibrational Spectra of Cholesteric Liquid Crystals
Abstract Infrared (4000-625 cm−1) spectra of cholesterogenic materials—cholesteryl methyl and ethyl carbonates, benzoate and laurate have been examined in the solid state. Correlation of the
Orientational order parameters and conformation of nematic p‐ethoxybenzylidene‐p‐n‐butylaniline
Orientational order parameters for nematic liquid crystalline compound p‐ethoxybenzylidene‐p‐n‐butylaniline (EBBA) have been estimated by studying the dipole–dipole splitings in the wide line NMR
Infrared Spectroscopic Studies of Homologous Cholesteric Liquid Crystals
Abstract Infrared (500–2500 cm−1) spectra of cholesteryl alkyl carbonates (methyl, ethyl and oleyl) have been examined in the solid (cholesteryl methyl carbonate and cholesteryl ethyl carbonate) and
Nuclear magnetic resonance spectroscopy in cholesteric liquid crystals. I. Orientational order parameter measurements
Orientational order parameters for cholesteric liquid crystalline compounds—cholesteryl benzoate, methyl carbonate, ethyl carbonate, and laurate—have been estimated by studying the dipole–dipole
Refractive Indices, Densities, Polarizabilities and Molecular Order in Cholesteric Liquid Crystals
Abstract The temperature variation of refractive indices (n o,ne), birefringence (Δn), density (ρ) and order parameter (S) of two cholesteric liquid crystals—cholesteryl benzoate and laurate are
Rotatory Dispersion of Cholesteric Liquid Crystals
Abstract Measurements of rotatory dispersion and circular dichroism of (i) a mixture of nematic p-methoxybenzylidene-p'-butylaniline (MBBA) and spectratherm (ii) a mixture of cholesteryl benzoate and
Infrared and Far-Infrared Studies on the Nematogenic Homologous Series Trans-4-Alkyl-(4-Cyanophenyl) Cyclohexanes
IR (650-4000 cm-1) and far-IR (20-650 cm-1) spectra of the nematogenic homologous series trans-4-alkyl-(4-cyanophenyl)cyclohexanes (Et, Pr, Bu, pentyl and heptyl) were examd. in the solid and liq.
Infrared Spectroscopic Studies of the Nematogenic Homologous Series p−(p−ethoxyphenylazo) phenyl alkanoates
Abstract Infrared (500–2000 cm−1) spectra of p-(p-ethoxyphenylazo)phenyl alkanoates (valerate, hexanoate, heptanoate and undecylenate) have been examined in the solid state. An attempt has been made
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