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

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Authors

Niyazbek Ibrayev¹ , Evgeniya Seliverstova¹ , Assel Kanapina¹

1. Institute of Molecular Nanophotonics, Buketov Karaganda University

Conference / event

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

Poster summary

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.

Keywords

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

Research areas

Nanoengineering, Material Sciences, Physics

References

No data provided

Funding

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

Supplemental files

No data provided

Additional information

Competing interests

No competing interests were disclosed.

Data availability statement

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

Creative Commons license

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.