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Ultra-pure, water-dispersed Au nanoparticles produced by femtosecond laser ablation and fragmentation

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posted on 2024-08-06, 09:19 authored by Reda Kubiliute, Ksenia A. Maximova, Alireza Lajevardipour, Jiawey Yong, Jennifer S. Hartley, Abu S. M. Mohsin, Pierre Blandin, James ChonJames Chon, Marc Sentis, Paul StoddartPaul Stoddart, Andrei Kabashin, Ricardas Rotomskis, Andrew ClaytonAndrew Clayton, Saulius JuodkazisSaulius Juodkazis
Aqueous solutions of ultra-pure gold nanoparticles have been prepared by methods of femtosecond laser ablation from a solid target and fragmentation from already formed colloids. Despite the absence of protecting ligands, the solutions could be (1) fairly stable and poly size-dispersed; or (2) very stable and monodispersed, for the two fabrication modalities, respectively. Fluorescence quenching behavior and its intricacies were revealed by fluorescence lifetime imaging microscopy in rhodamine 6G water solution. We show that surface-enhanced Raman scattering of rhodamine 6G on gold nanoparticles can be detected with high fidelity down to micromolar concentrations using the nanoparticles. Application potential of pure gold nanoparticles with polydispersed and nearly monodispersed size distributions are discussed.

Funding

Ultra-fast alchemy: a new strategy to synthesise super-dense nanomaterials

Australian Research Council

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ISSN

1178-2013

Journal title

International Journal of Nanomedicine

Volume

8

Issue

11

Pagination

10 pp

Publisher

Dove Press

Copyright statement

Copyright © 2013 KubiliÅ«te. et al, publisher and licensee Dove Medical Press Ltd. This an Open Access article which permits unrestricted noncommercial use, provided the original work is properly cited. This work is licensed under a Creative Commons Attribution-Noncommerical 3.0 license (http://creativecommons.org/licenses/by-nc/3.0/). The published version is reproduced in accordance with this policy.

Language

eng

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