Giant permittivity in dimethylamino-terminated ferroelectric nematogens

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F23%3A00573276" target="_blank" >RIV/68378271:_____/23:00573276 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21340/23:00367361

Výsledek na webu

<a href="https://hdl.handle.net/11104/0343745" target="_blank" >https://hdl.handle.net/11104/0343745</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.molliq.2023.122360" target="_blank" >10.1016/j.molliq.2023.122360</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Giant permittivity in dimethylamino-terminated ferroelectric nematogens

Popis výsledku v původním jazyce

Since the recent discoveries, ferroelectric nematics became of upmost interest due to their outstanding ferroelectric properties. In this work, we prepared a series of polar molecules revealing a ferroelectric nematic phase (NF) with a very high dielectric constant (>104). A new motif, which differs from previously reported molecular structures, was optimized to support the NF phase. For all homologues the NF phase was observed directly on the cooling from the isotropic phase and ferroelectric behaviour was investigated by dielectric spectroscopy, second harmonic generation, polarization current measurements and by analysis of textures in the polarized light. The presented materials combine ferroelectricity with giant permittivity in a fluid media at room temperatures, so they appear to be extremely attractive. Polarity of molecules with the strong susceptibility to the electric field represent high potential for various applications in energy-efficient memory devices or capacitors.

Název v anglickém jazyce

Giant permittivity in dimethylamino-terminated ferroelectric nematogens

Popis výsledku anglicky

Since the recent discoveries, ferroelectric nematics became of upmost interest due to their outstanding ferroelectric properties. In this work, we prepared a series of polar molecules revealing a ferroelectric nematic phase (NF) with a very high dielectric constant (>104). A new motif, which differs from previously reported molecular structures, was optimized to support the NF phase. For all homologues the NF phase was observed directly on the cooling from the isotropic phase and ferroelectric behaviour was investigated by dielectric spectroscopy, second harmonic generation, polarization current measurements and by analysis of textures in the polarized light. The presented materials combine ferroelectricity with giant permittivity in a fluid media at room temperatures, so they appear to be extremely attractive. Polarity of molecules with the strong susceptibility to the electric field represent high potential for various applications in energy-efficient memory devices or capacitors.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

<a href="/cs/project/GA22-16499S" target="_blank" >GA22-16499S: Chiralita jako nástroj kontroly fotosenzitivity supramolekulárního uspořádání</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Journal of Molecular Liquids

ISSN

0167-7322

e-ISSN

1873-3166

Svazek periodika

385

Číslo periodika v rámci svazku

Sept.

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

122360

Kód UT WoS článku

001034230000001

EID výsledku v databázi Scopus

2-s2.0-85163151247