Improving the stability of plasmonic magnesium nanoparticles in aqueous media
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Type
Article
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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.
Publication Date
2021-12-16
Online Publication Date
2021-11-29
Acceptance Date
2021-11-29
Keywords
40 Engineering, 4018 Nanotechnology, Bioengineering, Nanotechnology
Journal Title
Nanoscale
Journal ISSN
2040-3364
2040-3372
2040-3372
Volume Title
Publisher
Royal Society of Chemistry (RSC)
Sponsorship
European Research Council (804523)
Engineering and Physical Sciences Research Council (EP/L015978/1)
Engineering and Physical Sciences Research Council (EP/L015978/1)
Engineering and Physical Sciences Research Council (NanoDTC Cambridge (EP/L015978/1)