Control over rotary motion and multicolour switching in 3-hydroxyphtha-limide fluorophores: An interplay between AIE and ESIPT

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F23%3APU149214" target="_blank" >RIV/00216305:26310/23:PU149214 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0143720823002048?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0143720823002048?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.dyepig.2023.111279" target="_blank" >10.1016/j.dyepig.2023.111279</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Control over rotary motion and multicolour switching in 3-hydroxyphtha-limide fluorophores: An interplay between AIE and ESIPT

Popis výsledku v původním jazyce

In this paper, we demonstrate the ability of N-substituted 3-hydroxyphthalimides with pyridine and isoquinoline rings to perform multicolour switching by different stimuli. Restriction of the C-N rotary motion of the heterocycles allows control over their photoluminescence performance (PLQY = 54-65%) in water-induced aggregation by an additive interplay of excited-state proton-mediated processes in the aggregates. Restriction of the rotations by the affinity of the heterocyclic nitrogen atoms to Zn2+ and switching to new emission bands (PLQY = 8-29%) in solution and solid state were also achieved. Protonation of the pyridine/isoquinoline rings allows the formation of intramolecular hydrogen bonds with the imide carbonyl groups, resulting in restricted rotations. The protonated forms switch to strong blue emission due to local excitation of the protonated heterocycles, which are unable to undergo proton transfer. Understanding the interplay between both photophysical processes would allow the switching of emissions by multistimuli.

Název v anglickém jazyce

Control over rotary motion and multicolour switching in 3-hydroxyphtha-limide fluorophores: An interplay between AIE and ESIPT

Popis výsledku anglicky

In this paper, we demonstrate the ability of N-substituted 3-hydroxyphthalimides with pyridine and isoquinoline rings to perform multicolour switching by different stimuli. Restriction of the C-N rotary motion of the heterocycles allows control over their photoluminescence performance (PLQY = 54-65%) in water-induced aggregation by an additive interplay of excited-state proton-mediated processes in the aggregates. Restriction of the rotations by the affinity of the heterocyclic nitrogen atoms to Zn2+ and switching to new emission bands (PLQY = 8-29%) in solution and solid state were also achieved. Protonation of the pyridine/isoquinoline rings allows the formation of intramolecular hydrogen bonds with the imide carbonyl groups, resulting in restricted rotations. The protonated forms switch to strong blue emission due to local excitation of the protonated heterocycles, which are unable to undergo proton transfer. Understanding the interplay between both photophysical processes would allow the switching of emissions by multistimuli.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10400 - Chemical sciences

Projekt

<a href="/cs/project/GA19-22783S" target="_blank" >GA19-22783S: Molekulární materiály pro získávání energie: směrem k překročení limitů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2023

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

215

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

13

Strana od-do

111279-111292

Kód UT WoS článku

000976530700001

EID výsledku v databázi Scopus

2-s2.0-85151776857