Vibrational Spectra of Liquid Crystals. I. Changes in the Infrared Spectrum at the Crystal–Nematic Transition
作者： Bernard J. Bulkin , Dolores Grunbaum , Angelo V. Santoro
DOI: 10.1063/1.1672218
关键词: Lattice defects 、 Vibrational spectra 、 Crystal 、 Analytical chemistry 、 Liquid crystal 、 Molecular vibration 、 Infrared 、 Crystallography 、 Chemistry 、 Alkoxy group 、 Infrared spectroscopy 、 Physical and Theoretical Chemistry 、 General Physics and Astronomy
摘要: The infrared spectra of 4,4′‐bis(alkoxy) azoxybenzenes (methyl, ethyl, butyl, pentyl, and hexyl) have been examined as a function temperature through the crystal–nematic transition. Several bands are observed to disappear gradually this transition is approached. nature these vibrational modes relative rates their disappearance discussed in terms lattice defect model Preliminary results for crystal–smectic 4,4′bis(heptyloxy) azoxybenzene also reported.
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