New azobenzene-based chiral-photochromic substances with thermally stable Z-isomers and their use for the induction of a cholesteric mesophase with a phototunable helix pitch

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F14%3A00435954" target="_blank" >RIV/68378271:_____/14:00435954 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22310/14:43898292

Výsledek na webu

<a href="http://dx.doi.org/10.1039/c4tc01167h" target="_blank" >http://dx.doi.org/10.1039/c4tc01167h</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/c4tc01167h" target="_blank" >10.1039/c4tc01167h</a>

Jazyk výsledku

angličtina

Název v původním jazyce

New azobenzene-based chiral-photochromic substances with thermally stable Z-isomers and their use for the induction of a cholesteric mesophase with a phototunable helix pitch

Popis výsledku v původním jazyce

Novel photosensitive azobenzene-containing substances with sorbitol- and lactate-based chiral fragments were synthesized to serve as chiral-photochromic dopants in cholesteric mixtures. Owing to the presence of chlorine or methyl lateral substituents inthe azobenzene fragment of the dopants, the photoinduced Z-form of their molecules is highly stable. The photooptical properties of the prepared cholesteric mixtures were studied and it was shown that UV-irradiation of the planarly-oriented films resultsin a shift of the selective light reflection wavelength to a long-wavelength spectral region due to E?Z isomerization of the azobenzene moieties. It was found that this value is almost two orders of magnitude less in comparison with the non-substitutedchiral-photochromic dopant also studied in this work. The obtained results demonstrate the promising properties of the synthesized compounds for creation of novel photoswitchable cholesteric materials.

Název v anglickém jazyce

New azobenzene-based chiral-photochromic substances with thermally stable Z-isomers and their use for the induction of a cholesteric mesophase with a phototunable helix pitch

Popis výsledku anglicky

Novel photosensitive azobenzene-containing substances with sorbitol- and lactate-based chiral fragments were synthesized to serve as chiral-photochromic dopants in cholesteric mixtures. Owing to the presence of chlorine or methyl lateral substituents inthe azobenzene fragment of the dopants, the photoinduced Z-form of their molecules is highly stable. The photooptical properties of the prepared cholesteric mixtures were studied and it was shown that UV-irradiation of the planarly-oriented films resultsin a shift of the selective light reflection wavelength to a long-wavelength spectral region due to E?Z isomerization of the azobenzene moieties. It was found that this value is almost two orders of magnitude less in comparison with the non-substitutedchiral-photochromic dopant also studied in this work. The obtained results demonstrate the promising properties of the synthesized compounds for creation of novel photoswitchable cholesteric materials.

Druh

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

CEP obor

JI - Kompositní materiály

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

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

Journal of Materials Chemistry C

ISSN

2050-7526

e-ISSN

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Svazek periodika

26

Číslo periodika v rámci svazku

40

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

8622-8629

Kód UT WoS článku

000342994600021

EID výsledku v databázi Scopus

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