Centripetal triazine chromophores: towards efficient two-photon absorbers and highly emissive polyimide films

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F23%3A39920351" target="_blank" >RIV/00216275:25310/23:39920351 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.rsc.org/en/content/articlelanding/2023/TC/D3TC00877K" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2023/TC/D3TC00877K</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d3tc00877k" target="_blank" >10.1039/d3tc00877k</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Centripetal triazine chromophores: towards efficient two-photon absorbers and highly emissive polyimide films

Popis výsledku v původním jazyce

Four centripetal (D-pi-)(3)-A chromophores based on s-triazine central acceptors and three amino donor-terminated branches were prepared. These chromophores were proved to be thermally stable up to 300 degrees C with a tuneable HOMO-LUMO gap (3.02-2.51 eV) and longest-wavelength absorption/emission maxima within the range of 390-427/485-551 nm. Relatively large Stokes shift up to 8000 cm(-1), quantum yields up to 78% and fluorescence lifetimes ranging between 2 and 4 ns were observed based on the chromophore structure and the used environment. In general, varying the pi-linker is proved to be a very useful strategy to tune the fundamental properties of these chromophores. Two-photon absorption measurements showed good to excellent cross-sections reaching 1000 GM. High-quality and well-transparent polyimide films doped with chromophores (0.1%) were further prepared, and showed bright emission in blue and yellow/green regions.

Název v anglickém jazyce

Centripetal triazine chromophores: towards efficient two-photon absorbers and highly emissive polyimide films

Popis výsledku anglicky

Four centripetal (D-pi-)(3)-A chromophores based on s-triazine central acceptors and three amino donor-terminated branches were prepared. These chromophores were proved to be thermally stable up to 300 degrees C with a tuneable HOMO-LUMO gap (3.02-2.51 eV) and longest-wavelength absorption/emission maxima within the range of 390-427/485-551 nm. Relatively large Stokes shift up to 8000 cm(-1), quantum yields up to 78% and fluorescence lifetimes ranging between 2 and 4 ns were observed based on the chromophore structure and the used environment. In general, varying the pi-linker is proved to be a very useful strategy to tune the fundamental properties of these chromophores. Two-photon absorption measurements showed good to excellent cross-sections reaching 1000 GM. High-quality and well-transparent polyimide films doped with chromophores (0.1%) were further prepared, and showed bright emission in blue and yellow/green regions.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10401 - Organic chemistry

Projekt

<a href="/cs/project/EF17_048%2F0007376" target="_blank" >EF17_048/0007376: Senzory s vysokou citlivostí a materiály s nízkou hustotou na bázi polymerních nanokompozitů-NANOMAT</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

Journal of Materials Chemistry C

ISSN

2050-7526

e-ISSN

2050-7534

Svazek periodika

11

Číslo periodika v rámci svazku

22

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

"7252–7261"

Kód UT WoS článku

000993802600001

EID výsledku v databázi Scopus

2-s2.0-85161489032