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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F14%3A00432530" target="_blank" >RIV/68378271:_____/14:00432530 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1080/02678292.2014.910315" target="_blank" >http://dx.doi.org/10.1080/02678292.2014.910315</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1080/02678292.2014.910315" target="_blank" >10.1080/02678292.2014.910315</a>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JJ - Ostatní materiály

OECD FORD obor

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Projekt

<a href="/cs/project/GA13-14133S" target="_blank" >GA13-14133S: Perspektivní funkční materiály s polárním uspořádáním v nano měřítku</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Liquid Crystals

ISSN

0267-8292

e-ISSN

—

Svazek periodika

41

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

1179-1187

Kód UT WoS článku

000337159900013

EID výsledku v databázi Scopus

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