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Orientational and structural properties of ferroelectric liquid crystal with broad temperature range of the SmC* phase by .sup.13./sup.C NMR, x-ray scattering and dielectric spectroscopy

SYSNO ASEP	0322212
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Orientational and structural properties of ferroelectric liquid crystal with broad temperature range of the SmC* phase by ¹³C NMR, x-ray scattering and dielectric spectroscopy
Title	Orientační a strukturní vlastnosti feroelektrických kapalných krystalů se širokou oblastí existence SmC* fáze studované pomocí ¹³C NMR, roentgenové difrakce a dielektrické spektroskopie
Author(s)	Bubnov, Alexej M. (FZU-D) Domenici, V. (IT) Hamplová, Věra (FZU-D)_{RID, ORCID, SAI} Kašpar, Miroslav (FZU-D)_RID Veracini, C.A. (IT) Glogarová, Milada (FZU-D)_{RID, ORCID}
Source Title	Journal of Physics-Condensed Matter. - : Institute of Physics Publishing - ISSN 0953-8984 Roč. 21, č. 3 (2009), 035102/1-035102/8
Number of pages	8 s.
Language	eng - English
Country	GB - United Kingdom
Keywords	ferroelectric liquid crystal ; high spontaneous polarization ; ¹³C nuclear magnetic resonance ; x-ray scattering ; dielectric spectroscopy ; viscosity
Subject RIV	BM - Solid Matter Physics ; Magnetism
R&D Projects	GA202/09/0047 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
	GA202/05/0431 GA ČR - Czech Science Foundation (CSF)
	OC 175 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
	IAA100100710 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
CEZ	AV0Z10100520 - FZU-D (2005-2011)
UT WOS	000261833600019
DOI	10.1088/0953-8984/21/3/035102
Annotation	Thermotropic liquid crystalline (LC) materials laterally substituted by a methyl group on the aromatic ring of the alkoxybenzoate unit far from the chiral centre exhibit a very broad temperature range in the ferroelectric smectic C* (SmC) phase on cooling with a very high spontaneous polarization and tilt angle at saturation. LC material, representative of this category of LCs, has been studied by solid state 13C-NMR, SAXS, dielectric spectroscopy and optical methods. Values of the spontaneous tilt angle measured optically are compared to those determined from the x-ray data and discussed. 13C-NMR data allowed to get the information about the degree of orientational order of the SmC phase and revealed the complete unwinding of the helical axis at the magnetic field of 9.4 T. This result is discussed in the framework of recent publications on the effect of the magnetic field on the supra-molecular structure of the SmC* phase.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2009

Number of the records: 1