Maturing conditions of bimetallic nanocomposites as a new factor influencing Au-Ag synergism and impact of Cu (II) and/or Fe (III) on luminescence

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15640%2F25%3A73627278" target="_blank" >RIV/61989592:15640/25:73627278 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989592:15310/25:73627278

Výsledek na webu

<a href="https://royalsocietypublishing.org/doi/epdf/10.1098/rsos.241385" target="_blank" >https://royalsocietypublishing.org/doi/epdf/10.1098/rsos.241385</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1098/rsos.241385" target="_blank" >10.1098/rsos.241385</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Maturing conditions of bimetallic nanocomposites as a new factor influencing Au-Ag synergism and impact of Cu (II) and/or Fe (III) on luminescence

Popis výsledku v původním jazyce

Gold–silver synergism has been well documented in many scientific works dealing with luminescent nanostructures that are exploitable in biomedical and environmental application. Frequently, the ratio of Au : Ag in synthetic mixtures was varied to influence the extent of Au–Ag synergism of the resulting luminescent gold–silver nanoclusters (GSNCs). However, in our approach, a new step, maturing under differing conditions using the same Au : Ag ratio (5 : 1), has been investigated systematically for the very first time. As referent systems, monometallic gold nanoclusters (AuNCs) and protein treated by the conditions of synthesis and maturing were prepared and investigated. The selected types of maturing conditions led to distinct changes in fluorescence characteristics and, consequently, Au–Ag synergism extent (evaluated as the ratio of fluorescence quantum yields of GSNCs versus AuNCs). The best synergism was obtained for GSNCs matured at 37°C for 2.5 h. The stability of luminescent signal of these GSNCs was tested in the presence of an excess (to 20 mM) of Cu(II) and/or Fe(III) ions (crucial cofactors in living systems). The same metallic ion concentration caused different extents of GSNC luminescence quenching, for which a plausible reasoning is suggested.

Název v anglickém jazyce

Maturing conditions of bimetallic nanocomposites as a new factor influencing Au-Ag synergism and impact of Cu (II) and/or Fe (III) on luminescence

Popis výsledku anglicky

Gold–silver synergism has been well documented in many scientific works dealing with luminescent nanostructures that are exploitable in biomedical and environmental application. Frequently, the ratio of Au : Ag in synthetic mixtures was varied to influence the extent of Au–Ag synergism of the resulting luminescent gold–silver nanoclusters (GSNCs). However, in our approach, a new step, maturing under differing conditions using the same Au : Ag ratio (5 : 1), has been investigated systematically for the very first time. As referent systems, monometallic gold nanoclusters (AuNCs) and protein treated by the conditions of synthesis and maturing were prepared and investigated. The selected types of maturing conditions led to distinct changes in fluorescence characteristics and, consequently, Au–Ag synergism extent (evaluated as the ratio of fluorescence quantum yields of GSNCs versus AuNCs). The best synergism was obtained for GSNCs matured at 37°C for 2.5 h. The stability of luminescent signal of these GSNCs was tested in the presence of an excess (to 20 mM) of Cu(II) and/or Fe(III) ions (crucial cofactors in living systems). The same metallic ion concentration caused different extents of GSNC luminescence quenching, for which a plausible reasoning is suggested.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

21001 - Nano-materials (production and properties)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

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

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Royal Society Open Science

ISSN

2054-5703

e-ISSN

—

Svazek periodika

12

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

20

Strana od-do

"241385-1"-"241385-20"

Kód UT WoS článku

001402059700003

EID výsledku v databázi Scopus

2-s2.0-85216192803