Dielectric properties of chiral ferroelectric liquid crystalline compounds with three aromatic rings connected by ester groups

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F19%3A00509430" target="_blank" >RIV/68378271:_____/19:00509430 - isvavai.cz</a>

Výsledek na webu

<a href="http://hdl.handle.net/11104/0300180" target="_blank" >http://hdl.handle.net/11104/0300180</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/cryst9090473" target="_blank" >10.3390/cryst9090473</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Dielectric properties of chiral ferroelectric liquid crystalline compounds with three aromatic rings connected by ester groups

Popis výsledku v původním jazyce

The tilted ferroelectric SmC* phase of three structurally different series of lactic acid derivatives with ester linkage groups in the molecular core has been studied by broad band dielectric spectroscopy. The dielectric spectra strongly depend both on the temperature as well as the specific molecular structure of the self-assembling compounds possessing the ferroelectric polar order. In the SmC* phase, the real and imaginary parts of the complex permittivity increase up to certain temperature near the SmC*-N*/SmA* transition and then decreases with increasing temperature, perhaps due to the disruption of the molecular domains at the onset of the SmA*/N* phase transition. The dielectric strength is also influenced by the difference in the alkyl chain length and type of linkage group of the constituent molecules. The relaxation time and the relaxation frequency are found to vary with the molecular structure of the studied ferroelectric compounds.n

Název v anglickém jazyce

Dielectric properties of chiral ferroelectric liquid crystalline compounds with three aromatic rings connected by ester groups

Popis výsledku anglicky

The tilted ferroelectric SmC* phase of three structurally different series of lactic acid derivatives with ester linkage groups in the molecular core has been studied by broad band dielectric spectroscopy. The dielectric spectra strongly depend both on the temperature as well as the specific molecular structure of the self-assembling compounds possessing the ferroelectric polar order. In the SmC* phase, the real and imaginary parts of the complex permittivity increase up to certain temperature near the SmC*-N*/SmA* transition and then decreases with increasing temperature, perhaps due to the disruption of the molecular domains at the onset of the SmA*/N* phase transition. The dielectric strength is also influenced by the difference in the alkyl chain length and type of linkage group of the constituent molecules. The relaxation time and the relaxation frequency are found to vary with the molecular structure of the studied ferroelectric compounds.n

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20505 - Composites (including laminates, reinforced plastics, cermets, combined natural and synthetic fibre fabrics; filled composites)

Projekt

<a href="/cs/project/GA19-03564S" target="_blank" >GA19-03564S: Inteligentní supramolekulární fotochromní nanostruktury</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Crystals

ISSN

2073-4352

e-ISSN

—

Svazek periodika

9

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

13

Strana od-do

1-13

Kód UT WoS článku

000487979700024

EID výsledku v databázi Scopus

2-s2.0-85073319054