Room Temperature Ferroelectric Mixture of Chiral and Achiral Thioesters

• Authors: J. Czerwiec , M. Ossowska-Chruściel , J. Chruściel , S. Wróbel
• Languages of publication: EN

Abstracts

EN

Dielectric properties of the mixture of two thioester compounds: 4-8-alkoxy-benzoate-thio-carboxyl S-4-pentyl-phenyl (8OS5), (s)-4-(1-methyl-heptyloxy)biphenyl-4-thio-carboksyl 4-9-alkil-phenyl (MHOBS9) are presented. The chiral compound exhibits nematic (N*) and ferroelectric smectic C* phase (SmC*). The achiral compound shows N, SmA and monotropic SmC and SmB phases. the mixture of both compounds of 0.5 molar fraction shows SmC* in the wider temperature range than pure MHOBS9. The mixture was studied using frequency domain dielectric spectroscopy. Dielectric measurements for the SmC* phase of the mixture revealed Goldstone mode at higher frequencies and Maxwell-Wagner relaxation at low frequencies.

Keywords

EN

77.84.Nh; 78.15.+e; 64.70.M-

Discipline

• 77.84.Nh: Liquids, emulsions, and suspensions; liquid crystals(for structure of liquid crystals, see 61.30.-v)
• 78.15.+e: Optical properties of fluid materials, supercritical fluids and liquid crystals(for reactions in supercritical fluids, see 82.33.De)
• 64.70.M-: Transitions in liquid crystals

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2010
• Volume: 117
• Issue: 4
• Pages: 549-552

Dates

published

2010-04

Contributors

author

J. Czerwiec

• Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Kraków, Poland

author

M. Ossowska-Chruściel

• Institute of Chemistry, University of Podlasie, 3-go Maja 54, 08-110 Siedlce, Poland

author

J. Chruściel

• Institute of Chemistry, University of Podlasie, 3-go Maja 54, 08-110 Siedlce, Poland

author

S. Wróbel

• Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Kraków, Poland

References

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Identifiers

DOI

10.12693/APhysPolA.117.549