Influence of fluorosubstitution on physical properties of the smectogenic chiral ester

Aleksandra Deptuch,Anna Drzewicz,Magdalena Dziurka,Natalia Gorska,James Hooper,Teresa Jaworska-Golab,Ewa Juszynska-Galazkaa,Monika Marzec,Marcin Piwowarczyk,Monika Srebro-Hooper,Marzena Tykarska,Magdalena Urbanskad

Materials Research Bulletin（2022）

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摘要

•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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关键词

A. organic compounds,B. phase transitions,C. differential scanning calorimetry,C. X-ray diffraction,D. dielectric properties

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