Photooptical properties of polymethacrylates having cyanoazobenzene-containing side groups with lateral methyl substituents and different spacer length
Identifikátory výsledku
Kód výsledku v 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>
Výsledek na webu
<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>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Photooptical properties of polymethacrylates having cyanoazobenzene-containing side groups with lateral methyl substituents and different spacer length
Popis výsledku v původním jazyce
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
Název v anglickém jazyce
Photooptical properties of polymethacrylates having cyanoazobenzene-containing side groups with lateral methyl substituents and different spacer length
Popis výsledku anglicky
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
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10404 - Polymer science
Návaznosti výsledku
Projekt
<a href="/cs/project/GA19-03564S" target="_blank" >GA19-03564S: Inteligentní supramolekulární fotochromní nanostruktury</a><br>
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2019
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Journal of Polymer Science. Part B, Polymer Physics
ISSN
0887-6266
e-ISSN
—
Svazek periodika
57
Číslo periodika v rámci svazku
19
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
6
Strana od-do
1337-1342
Kód UT WoS článku
000489567200005
EID výsledku v databázi Scopus
2-s2.0-85073522192