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

Result code in 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>
Alternative codes found
RIV/60461373:22310/14:43898292
Result on the web
<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>

Result language
angličtina
Original language name
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
Original language description
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.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JI - Composite materials
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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