Photosensitive bent-core liquid crystals with laterally substituted azobenzene unit

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F21%3A43923643" target="_blank" >RIV/60461373:22310/21:43923643 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/21:00548179

Výsledek na webu

<a href="https://www.mdpi.com/2073-4352/11/10/1265" target="_blank" >https://www.mdpi.com/2073-4352/11/10/1265</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/cryst11101265" target="_blank" >10.3390/cryst11101265</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Photosensitive bent-core liquid crystals with laterally substituted azobenzene unit

Popis výsledku v původním jazyce

Photosensitive liquid crystals represent an important class of functional materials that experience rapid development. Hereby, we present novel bent-core liquid crystals bearing a lateral substitution on the central core and in the vicinity of the photosensitive unit—an azo group. The azo group enables fast (E)-to-(Z)-isomerization upon irradiation with UV-light and visible light, while the substitution facilitates the high stability of the photochemically formed (Z)-isomer. The effectiveness of the irradiation and the composition of photostationary states was determined by UV/Vis and1H NMR spectroscopy. A nematic phase formed by the materials was characterized by differential scanning calorimetry and optical polarizing microscopy. We show that the materials easily change their relative configuration of the N=N double bond not only in solution, but also in the mesophase, which leads to fast isothermal phase transition from the nematic phase to isotropic liquid. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

Název v anglickém jazyce

Photosensitive bent-core liquid crystals with laterally substituted azobenzene unit

Popis výsledku anglicky

Photosensitive liquid crystals represent an important class of functional materials that experience rapid development. Hereby, we present novel bent-core liquid crystals bearing a lateral substitution on the central core and in the vicinity of the photosensitive unit—an azo group. The azo group enables fast (E)-to-(Z)-isomerization upon irradiation with UV-light and visible light, while the substitution facilitates the high stability of the photochemically formed (Z)-isomer. The effectiveness of the irradiation and the composition of photostationary states was determined by UV/Vis and1H NMR spectroscopy. A nematic phase formed by the materials was characterized by differential scanning calorimetry and optical polarizing microscopy. We show that the materials easily change their relative configuration of the N=N double bond not only in solution, but also in the mesophase, which leads to fast isothermal phase transition from the nematic phase to isotropic liquid. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

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

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

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

11

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

14

Strana od-do

—

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85118219675