Influence of fluorosubstitution on physical properties of the smectogenic chiral ester
Materials Research Bulletin(2022)
Abstract
•3F7FPhF and 3F7HPhF with one and two F atoms in aromatic core are compared.•Absence of vitrification of smectic CA* phase in doubly-fluorosubstituted 3F7FPhF.•Lower tilt angle and longer switching time for 3F7FPhF.•Lower frequencies of PL and PH phasons for 3F7FPhF.•Slightly higher wavenumbers of two C=O stretching bands for 3F7FPhF.
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Key words
A. organic compounds,B. phase transitions,C. differential scanning calorimetry,C. X-ray diffraction,D. dielectric properties
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