Photooptical properties of polymethacrylates having cyanoazobenzene-containing side groups with lateral methyl substituents and different spacer length
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F19%3A00517455" target="_blank" >RIV/68378271:_____/19:00517455 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1002/polb.24878" target="_blank" >https://doi.org/10.1002/polb.24878</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/polb.24878" target="_blank" >10.1002/polb.24878</a>
Alternative languages
Result language
angličtina
Original language name
Photooptical properties of polymethacrylates having cyanoazobenzene-containing side groups with lateral methyl substituents and different spacer length
Original language description
New photochromic polymethacrylates with different spacer length having azobenzene side groups and lateral methyl substituents were synthesized. The phase behavior of polymethacrylates and their photooptical properties were studied and compared with unsubstituted analogues. It is shown that an introduction of lateral methyl substituents results in almost complete suppression of liquid crystalline (LC) phase formation and strong decrease of photoinduced dichroism values. It is found that rates of the photoinduced E-Z isomerization and back thermal Z-E isomerization are almost independent on spacer lengths. Due to the presence of lateral substituents, the photoinduced azobenzene Z-form shows remarkable long lifetime, and back thermal conversion at room temperature takes more than 10 days. Specific peculiarities of the photoorientation process in polymer films under the polarized UV and visible light action were studied and their mechanism is suggested.n
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10404 - Polymer science
Result continuities
Project
<a href="/en/project/GA19-03564S" target="_blank" >GA19-03564S: Smart supramolecular photochromic nanostructures</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Polymer Science. Part B, Polymer Physics
ISSN
0887-6266
e-ISSN
—
Volume of the periodical
57
Issue of the periodical within the volume
19
Country of publishing house
US - UNITED STATES
Number of pages
6
Pages from-to
1337-1342
UT code for WoS article
000489567200005
EID of the result in the Scopus database
2-s2.0-85073522192