Effect of alkyl chains length on properties of ferroelectric liquid crystals with the keto group attached to the molecule core
Result description
In order to contribute to better understanding of the molecular structure ? physical property relationship, properties of ferroelectric liquid crystalline materials derived from the lactic acid with the keto group in the molecular core has been studied.These compounds differing only by the length of the chiral and non-chiral alkyl chains exhibit the paraelectric SmA* and the ferroelectric SmC* phase over 150 K broad temperature range down to the room temperature. Temperature dependences of spontaneouspolarization, tilt angle, layer spacing, helix pitch length and dielectric permittivity has been compared and discussed for all studied compounds. The effect of the alkyl chains length on mesomorphic properties has been established and discussed in comparison to that of similar materials.
Keywords
ferroelectric liquid crystalketo grouplactic acid derivativespontaneous quantitiesSAXShelix pitch
The result's identifiers
Result code in IS VaVaI
Result on the web
DOI - Digital Object Identifier
Alternative languages
Result language
angličtina
Original language name
Effect of alkyl chains length on properties of ferroelectric liquid crystals with the keto group attached to the molecule core
Original language description
In order to contribute to better understanding of the molecular structure ? physical property relationship, properties of ferroelectric liquid crystalline materials derived from the lactic acid with the keto group in the molecular core has been studied.These compounds differing only by the length of the chiral and non-chiral alkyl chains exhibit the paraelectric SmA* and the ferroelectric SmC* phase over 150 K broad temperature range down to the room temperature. Temperature dependences of spontaneouspolarization, tilt angle, layer spacing, helix pitch length and dielectric permittivity has been compared and discussed for all studied compounds. The effect of the alkyl chains length on mesomorphic properties has been established and discussed in comparison to that of similar materials.
Czech name
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Czech description
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Classification
Type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Result continuities
Project
GAP204/11/0723: Multifunctional self-assembling materials on nano-level
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Phase Transitions
ISSN
0141-1594
e-ISSN
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Volume of the periodical
85
Issue of the periodical within the volume
10
Country of publishing house
GB - UNITED KINGDOM
Number of pages
12
Pages from-to
849-860
UT code for WoS article
000309126000002
EID of the result in the Scopus database
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Basic information
Result type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP
BM - Solid-state physics and magnetism
Year of implementation
2012