Improving the stability of plasmonic magnesium nanoparticles in aqueous media

Asselin, Jérémie and Hopper, Elizabeth R. and Ringe, Emilie (2021) Improving the stability of plasmonic magnesium nanoparticles in aqueous media. Nanoscale, 13 (48). pp. 20649-20656. ISSN 2040-3364 DOI https://doi.org/10.1039/d1nr06139a

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Official URL: https://doi.org/10.1039/d1nr06139a

Abstract

This work describes two different core–shell architectures based on Mg nanoparticles (NPs) synthesised in order to improve Mg's stability in aqueous solutions. The shell thickness in Mg–polydopamine NPs can be modulated from 5 to >50 nm by ending the polymerization at different times; the resulting structures stabilize the metallic, plasmonic core in water for well over an hour. Mg–silica NPs with shells ranging from 5 to 30 nm can also be prepared via a modified Stöber procedure and they retain optical properties in 5% water-in-isopropanol solutions. These new architectures allow Mg nanoplasmonics to be investigated as an alternative to Ag and Au in a broader range of experimental conditions for a rich variety of applications.

Item Type: Article
Uncontrolled Keywords: AREP2021, IA77
Subjects: 03 - Mineral Sciences
Divisions: 03 - Mineral Sciences
07 - Gold Open Access
Journal or Publication Title: Nanoscale
Volume: 13
Page Range: pp. 20649-20656
Identification Number: https://doi.org/10.1039/d1nr06139a
Depositing User: Sarah Humbert
Date Deposited: 07 Jan 2022 18:43
Last Modified: 07 Jan 2022 18:43
URI: http://eprints.esc.cam.ac.uk/id/eprint/6040

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