Photo-orientation processes in liquid crystalline polymethacrylates with side azobenzene groups having lateral methyl substituents

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F21%3A00548917" target="_blank" >RIV/68378271:_____/21:00548917 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1021/acs.macromol.1c01637" target="_blank" >https://doi.org/10.1021/acs.macromol.1c01637</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.macromol.1c01637" target="_blank" >10.1021/acs.macromol.1c01637</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Photo-orientation processes in liquid crystalline polymethacrylates with side azobenzene groups having lateral methyl substituents

Popis výsledku v původním jazyce

Design of new photoactive materials exhibiting nano-organization aimed for smart practical applications remains an actual and highlighted task. Synthesis and comparative study of chiral LC polymethacrylates with azobenzene groups were carried out to contribute to better understanding of the structure-property relationship. The effect of chirality and length of spacer of the terminal alkyl groups on the photooptical properties were established. The presence of lateral methyl substituent in the photochrome/mesogen fragment leads to a significant decrease of isotropization temperature. The photoorientation processes under illumination with the polarized visible light (457 nm) are studied for amorphousized films. It was found that an increase in the spacer length leads to an increase in the value of photoinduced dichroism (ΔD=0.28). Chirality plays significant role on relaxation behavior of the irradiated enantiopure and racemic films of polymer with long spacer and alkyl tail.

Název v anglickém jazyce

Photo-orientation processes in liquid crystalline polymethacrylates with side azobenzene groups having lateral methyl substituents

Popis výsledku anglicky

Design of new photoactive materials exhibiting nano-organization aimed for smart practical applications remains an actual and highlighted task. Synthesis and comparative study of chiral LC polymethacrylates with azobenzene groups were carried out to contribute to better understanding of the structure-property relationship. The effect of chirality and length of spacer of the terminal alkyl groups on the photooptical properties were established. The presence of lateral methyl substituent in the photochrome/mesogen fragment leads to a significant decrease of isotropization temperature. The photoorientation processes under illumination with the polarized visible light (457 nm) are studied for amorphousized films. It was found that an increase in the spacer length leads to an increase in the value of photoinduced dichroism (ΔD=0.28). Chirality plays significant role on relaxation behavior of the irradiated enantiopure and racemic films of polymer with long spacer and alkyl tail.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10404 - Polymer science

Projekt

<a href="/cs/project/GC20-22615J" target="_blank" >GC20-22615J: Světlem řízené kapalně krystalické polymery s hydrazonovou nebo azobenzenovou skupinou určené pro fotoniku.</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Macromolecules

ISSN

0024-9297

e-ISSN

1520-5835

Svazek periodika

54

Číslo periodika v rámci svazku

22

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

10499-10509

Kód UT WoS článku

000744116200025

EID výsledku v databázi Scopus

2-s2.0-85119047736