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Effect of the chiral chain length on structural and phase properties of ferroelectric liquid crystals
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SYSNO ASEP 0361274 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Effect of the chiral chain length on structural and phase properties of ferroelectric liquid crystals Tvůrce(i) Stojanović, M. (RS)
Bubnov, Alexej (FZU-D) RID, ORCID, SAI
Obadović, D.Ž. (RS)
Hamplová, Věra (FZU-D) RID, ORCID, SAI
Kašpar, Miroslav (FZU-D) RID
Cvetinov, M. (RS)Zdroj.dok. Phase Transitions. - : Taylor & Francis - ISSN 0141-1594
Roč. 84, č. 4 (2011), s. 380-390Poč.str. 11 s. Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova ferroelectric liquid crystal ; alkoxypropionate chiral group ; spontaneous polarization ; tilt angle ; X-ray diffraction ; dielectric spectroscopy Vědní obor RIV BM - Fyzika pevných látek a magnetismus CEP IAA100100911 GA AV ČR - Akademie věd GA202/09/0047 GA AV ČR - Akademie věd GAP204/11/0723 GA ČR - Grantová agentura ČR CEZ AV0Z10100520 - FZU-D (2005-2011) UT WOS 000288673500007 DOI 10.1080/01411594.2010.545185 Anotace Electro-optic and structural studies obtained on several ferroelectric liquid crystalline materials with 2-alkoxypropionate group used as a chiral centre and without any lateral substitution are presented. In dependence on the chiral chain length these compounds exhibit the cholesteric N* phase, the ferroelectric smectic C*, and a low temperature SmX phase. Values of the spontaneous polarization and spontaneous tilt angle have been determined within the whole range of the SmC* phase. A low temperature SmX phase has been identified as the orthogonal hexatic SmB phase. The molecular parameters, namely the layer spacing in the SmC* and SmB phases and the average intermolecular distances (D) between neighbouring parallel molecules in all investigated phases have been determined using the results of the X-ray diffraction data obtained on non-oriented samples. Pracoviště Fyzikální ústav Kontakt Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Rok sběru 2012
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