Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Carbon Dots/Iron Oxide Nanoparticles With Tuneable Composition and Properties

Joanna D Stachowska
,
Monika B Gamża
ORCID logo ,
Claire Mellor
ORCID logo ,
Ella N Gibbons
,
Marta J Krysmann
,
Antonios Kelarakis
* ORCID logo ,
Elżbieta Gumieniczek-Chłopek
ORCID logo ,
Tomasz Strączek
,
Czesław Kapusta
,
Anna Szwajca
ORCID logo
Version 1 : Received: 5 January 2022 / Approved: 10 January 2022 / Online: 10 January 2022 (12:21:24 CET)

A peer-reviewed article of this Preprint also exists.

Stachowska, J.D.; Gamża, M.B.; Mellor, C.; Gibbons, E.N.; Krysmann, M.J.; Kelarakis, A.; Gumieniczek-Chłopek, E.; Strączek, T.; Kapusta, C.; Szwajca, A. Carbon Dots/Iron Oxide Nanoparticles with Tuneable Composition and Properties. Nanomaterials 2022, 12, 674. Stachowska, J.D.; Gamża, M.B.; Mellor, C.; Gibbons, E.N.; Krysmann, M.J.; Kelarakis, A.; Gumieniczek-Chłopek, E.; Strączek, T.; Kapusta, C.; Szwajca, A. Carbon Dots/Iron Oxide Nanoparticles with Tuneable Composition and Properties. Nanomaterials 2022, 12, 674.

Abstract

We present a simple strategy to generate a family of carbon dot/iron oxide nanoparticles (C/Fe-NPs) that relies on the thermal decomposition of iron (III) acetylacetonate in the presence of a highly fluorescent carbon-rich precursor, while polyethylene glycol serves as the passivation agent. By varying the molar ratio of the reactants, a series of C/Fe-NPs have been synthesized with tuneable elemental composition in terms of C, H, O, N, Fe. The quantum yield is enhanced from 6% to 9% as the carbon content increases from 27% to 36%, while the room temperature saturation magnetization is improved from 4.1 emu/g to 17.7 emu/g as the iron content is enriched from 17 to 31%. In addition, the C/Fe-NPs show excellent antimicrobial properties, minimal cytotoxicity and demonstrate promising bioimaging capabilities, thus showing great potential for the development of advanced diagnostic tools.

Keywords

magnetization; photoluminescence; carbon dots; magnetic nanoparticles; antimicrobial

Subject

Chemistry and Materials Science, Nanotechnology

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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