Influence of the solvent on the dynamics of excited electrons in plasmonic nanoparticles of silver

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作者

Niyazbek Ibrayev¹ , Evgeniya Seliverstova¹ , Assel Kanapina¹

1. Institute of Molecular Nanophotonics, Buketov Karaganda University

会议/活动

The 8th Asian Symposium on Advanced Materials (ASAM-8), July 2023 (Novosibirsk, Russian Federation)

海报摘要

In this work, the effect of the solvent on the dynamics of excited electrons in the Ag NP is investigated. Silver NPs were synthesized by laser ablation method. The average diameter of the NPs (ZetasizerS90, Malvern) was equal to 19.3±4.1 nm. Next, solutions were prepared with a constant concentration of NP Ag, but with a different ratio of ethanol and water, which was equal to 1:0, 1:1 and 0:1. It is shown that an increase in the number of water molecules around the Ag NP leads to a decrease in both the intensity and duration of the transient absorption of Ag NP obtained by laser ablation. The long-lived transient absorption of NP Ag can be explained on the basis of the concept of interfacial micro-convective heat exchange between the surface of the NP metal and the molecules of the medium.

关键词

Silver nanoparticle, Plasmon, Transient absorbtion, Solvent, Eletron dynamics

研究领域

Nanoengineering, Material Sciences, Physics

参考文献

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基金

1. This research is funded by the Science Committee of the Ministry of Science and Higher Education of the Republic of Kazakhstan (No. AP14870117)

补充材料

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附加信息

利益冲突

No competing interests were disclosed.

数据可用性声明

The datasets generated during and / or analyzed during the current study are available from the corresponding author on reasonable request.

知识共享许可协议

Copyright © 2023 Ibrayev et al. This is an open access work distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.