Maturing conditions of bimetallic nanocomposites as a new factor influencing Au–Ag synergism and impact of Cu(II) and/or Fe(III) on luminescence
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 result...
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The Royal Society
2025-01-01
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| Series: | Royal Society Open Science |
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| Online Access: | https://royalsocietypublishing.org/doi/10.1098/rsos.241385 |
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| author | Veronika Svačinová Tomáš Pluháček Martin Petr Karolina Siskova |
| author_facet | Veronika Svačinová Tomáš Pluháček Martin Petr Karolina Siskova |
| author_sort | Veronika Svačinová |
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| description | 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. |
| format | Article |
| id | doaj-art-445dbf8c4e2a4111809263b01b7f5792 |
| institution | Kabale University |
| issn | 2054-5703 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | The Royal Society |
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| series | Royal Society Open Science |
| spelling | doaj-art-445dbf8c4e2a4111809263b01b7f57922025-01-22T00:16:49ZengThe Royal SocietyRoyal Society Open Science2054-57032025-01-0112110.1098/rsos.241385Maturing conditions of bimetallic nanocomposites as a new factor influencing Au–Ag synergism and impact of Cu(II) and/or Fe(III) on luminescenceVeronika Svačinová0Tomáš Pluháček1Martin Petr2Karolina Siskova3Department of Experimental Physics, Faculty of Science, Palacký University Olomouc, Olomouc, Czech RepublicDepartment of Analytical Chemistry, Faculty of Science, Palacký University Olomouc, Olomouc, Czech RepublicRCPTM, Catrin, Palacký University Olomouc, Olomouc, Czech RepublicDepartment of Experimental Physics, Faculty of Science, Palacký University Olomouc, Olomouc, Czech RepublicGold–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.https://royalsocietypublishing.org/doi/10.1098/rsos.241385bimetallic nanoclustergold–silver nanoclusterprotein templateluminescent nanocompositefluorescent nanocompositesynergistic effect |
| spellingShingle | Veronika Svačinová Tomáš Pluháček Martin Petr Karolina Siskova Maturing conditions of bimetallic nanocomposites as a new factor influencing Au–Ag synergism and impact of Cu(II) and/or Fe(III) on luminescence Royal Society Open Science bimetallic nanocluster gold–silver nanocluster protein template luminescent nanocomposite fluorescent nanocomposite synergistic effect |
| title | Maturing conditions of bimetallic nanocomposites as a new factor influencing Au–Ag synergism and impact of Cu(II) and/or Fe(III) on luminescence |
| title_full | Maturing conditions of bimetallic nanocomposites as a new factor influencing Au–Ag synergism and impact of Cu(II) and/or Fe(III) on luminescence |
| title_fullStr | Maturing conditions of bimetallic nanocomposites as a new factor influencing Au–Ag synergism and impact of Cu(II) and/or Fe(III) on luminescence |
| title_full_unstemmed | Maturing conditions of bimetallic nanocomposites as a new factor influencing Au–Ag synergism and impact of Cu(II) and/or Fe(III) on luminescence |
| title_short | Maturing conditions of bimetallic nanocomposites as a new factor influencing Au–Ag synergism and impact of Cu(II) and/or Fe(III) on luminescence |
| title_sort | maturing conditions of bimetallic nanocomposites as a new factor influencing au ag synergism and impact of cu ii and or fe iii on luminescence |
| topic | bimetallic nanocluster gold–silver nanocluster protein template luminescent nanocomposite fluorescent nanocomposite synergistic effect |
| url | https://royalsocietypublishing.org/doi/10.1098/rsos.241385 |
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