Acceptor-induced photoisomerization in small thienothiophene push-pull chromophores

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F75081431%3A_____%2F20%3A00001746" target="_blank" >RIV/75081431:_____/20:00001746 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216275:25310/20:39916357

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/abs/pii/S0143720820300139?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/abs/pii/S0143720820300139?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.dyepig.2020.108398" target="_blank" >10.1016/j.dyepig.2020.108398</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Acceptor-induced photoisomerization in small thienothiophene push-pull chromophores

Popis výsledku v původním jazyce

Six new push-pull chromophores based on thieno[3,2-b]thiophene were prepared by a facile two step synthesis of extended aldehyde and its subsequent Knoevenagel condensation. Optoelectronic and thermal properties of target chromophores were tailored by attaching various electron-withdrawing moieties. Variation of the acceptor resulted in tuning of the HOMO-LUMO gap by exclusive altering the LUMO level; the absorption maxima were found within a range of 428–479 nm independently on the used solvent. A reversible E-Z photoisomerization has been observed for the chromophores with particular electron withdrawing moieties. Whereas irradiation of the chromophores with RoyalBlue LED afforded a dynamic equilibrium of E and Z isomers, the Z-isomer is fully regenerated in the dark. Thus, the switching properties can be easily modulated by attaching proper electron acceptor. According to the performed DFT calculations, both isomers differ in the fundamental (non)linear optical properties.

Název v anglickém jazyce

Acceptor-induced photoisomerization in small thienothiophene push-pull chromophores

Popis výsledku anglicky

Six new push-pull chromophores based on thieno[3,2-b]thiophene were prepared by a facile two step synthesis of extended aldehyde and its subsequent Knoevenagel condensation. Optoelectronic and thermal properties of target chromophores were tailored by attaching various electron-withdrawing moieties. Variation of the acceptor resulted in tuning of the HOMO-LUMO gap by exclusive altering the LUMO level; the absorption maxima were found within a range of 428–479 nm independently on the used solvent. A reversible E-Z photoisomerization has been observed for the chromophores with particular electron withdrawing moieties. Whereas irradiation of the chromophores with RoyalBlue LED afforded a dynamic equilibrium of E and Z isomers, the Z-isomer is fully regenerated in the dark. Thus, the switching properties can be easily modulated by attaching proper electron acceptor. According to the performed DFT calculations, both isomers differ in the fundamental (non)linear optical properties.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

10401 - Organic chemistry

Projekt

—

Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Dyes and Pigments

ISSN

0143-7208

e-ISSN

1873-3743

Svazek periodika

179

Číslo periodika v rámci svazku

August 2020

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

3

Strana od-do

—

Kód UT WoS článku

000528803500028

EID výsledku v databázi Scopus

2-s2.0-85082877185