About: The effect of the alkyl chain length on the mesomorphic properties of new lactic acid derivatives

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About: The effect of the alkyl chain length on the mesomorphic properties of new lactic acid derivatives Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	New series of lactic acid derivatives with alkyl terminal chain have been synthesised and their mesomorphic properties studied. We have varied the length of chiral and non-chiral terminal alkyl chains and found that prolonging both chains has a strong effect on the SmA–SmC phase transition. Most of the new materials exhibit only paraelectric SmA* phase; for homologues with a longer non-chiral chain (m 10), the ferroelectric (SmC) phase appears below the SmA on cooling and persists down to a room temperature. The role of the chiral terminal chain in the molecule is quite opposite – only its short length supports the existence of ferroelectric phase. Additionally, a hexatic phase appeared below the SmA–SmC phase sequence for several homologues at low temperatures. Liquid crystalline properties of new materials have been compared with the previously prepared and studied lactic acid derivatives. New series of lactic acid derivatives with alkyl terminal chain have been synthesised and their mesomorphic properties studied. We have varied the length of chiral and non-chiral terminal alkyl chains and found that prolonging both chains has a strong effect on the SmA–SmC phase transition. Most of the new materials exhibit only paraelectric SmA* phase; for homologues with a longer non-chiral chain (m 10), the ferroelectric (SmC) phase appears below the SmA on cooling and persists down to a room temperature. The role of the chiral terminal chain in the molecule is quite opposite – only its short length supports the existence of ferroelectric phase. Additionally, a hexatic phase appeared below the SmA–SmC phase sequence for several homologues at low temperatures. Liquid crystalline properties of new materials have been compared with the previously prepared and studied lactic acid derivatives. (en)
Title	The effect of the alkyl chain length on the mesomorphic properties of new lactic acid derivatives The effect of the alkyl chain length on the mesomorphic properties of new lactic acid derivatives (en)
skos:prefLabel	The effect of the alkyl chain length on the mesomorphic properties of new lactic acid derivatives The effect of the alkyl chain length on the mesomorphic properties of new lactic acid derivatives (en)
skos:notation	RIV/68378271:_____/14:00432530!RIV15-GA0-68378271
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(GA13-14133S)
http://linked.open...iv/cisloPeriodika	8
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Pacherová, Oliva Kašpar, Miroslav Novotná, Vladimíra Hamplová, Věra
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Fyzikální ústav AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	13543
http://linked.open...ai/riv/idVysledku	RIV/68378271:_____/14:00432530
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	liquid crystals; lactate derivatives (en)
http://linked.open.../riv/klicoveSlovo	liquid crystals lactate derivatives
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[DE601AB85113]
http://linked.open...i/riv/nazevZdroje	Liquid Crystals
http://linked.open...in/vavai/riv/obor	JJ
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	Perspektivní funkční materiály s polárním uspořádáním v nano měřítku
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	41
http://linked.open...iv/tvurceVysledku	Hamplová, Věra Kašpar, Miroslav Novotná, Vladimíra Pacherová, Oliva
http://linked.open...ain/vavai/riv/wos	000337159900013
issn	0267-8292
number of pages	9 (xsd:int)
http://bibframe.org/vocab/doi	10.1080/02678292.2014.910315

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