Large thermally irreversible photoinduced shift of selective light reflection in hydrazone-containing cholesteric polymer systems
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F23%3A00573328" target="_blank" >RIV/68378271:_____/23:00573328 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1002/cphc.202300011" target="_blank" >https://doi.org/10.1002/cphc.202300011</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/cphc.202300011" target="_blank" >10.1002/cphc.202300011</a>
Alternative languages
Result language
angličtina
Original language name
Large thermally irreversible photoinduced shift of selective light reflection in hydrazone-containing cholesteric polymer systems
Original language description
In this work we synthesized and studied a comb-shaped hydrazone-containing copolyacrylate exhibited cholesteric liquid crystalline properties with the pitch length of the helix being tuned under irradiation with light. In the cholesteric phase selective light reflection in near IR spectral range was measured and large blue shift of reflection peak from 1650 nm to 500 nm was found under blue light irradiation. This shift is related to Z-E isomerization of photochromic hydrazone-containing groups and photochemically reversible. Improved and faster photooptical response was found after doping of copolymer with 10wt% of low-molar-mass liquid crystal. It is noteworthy that both isomers of the hydrazone photochromic group are thermally stable that enable to achieve pure photoinduced switch without any dark relaxation at any temperatures. Large photoinduced shift of the selective light reflection together with thermal bistability make such systems promising for the application in photonics.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
<a href="/en/project/GC20-22615J" target="_blank" >GC20-22615J: Light driven functional hydrazone and azobenzene based liquid crystalline polymers for photonics.</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ChemPhysChem
ISSN
1439-4235
e-ISSN
1439-7641
Volume of the periodical
24
Issue of the periodical within the volume
11
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
e202300011
UT code for WoS article
000955344900001
EID of the result in the Scopus database
2-s2.0-85150612052