Designing red-fluorescent superparamagnetic nanoparticles by conjugation with gold clusters

Photoluminescent (PL) metal and metal oxide nanoclusters (NCs), with a size of just several nanometers, are a separate class of nanomaterials abundant with new attractive optical, physical, and chemical properties and biocompatibility. However, the synthesis of PL magnetic NCs via attachment of PL N...

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Bibliographic Details
Published in:RSC advances 2022-12, Vol.12 (54), p.353-3538
Main Authors: Mikalauskaite, Agne, Pleckaitis, Marijus, Grinciene, Giedre, Karabanovas, Vitalijus, Jagminas, Arunas
Format: Article
Language:English
Subjects:
Biocompatibility
Chemical properties
Chemical synthesis
Chemistry
Cobalt ferrites
Conjugation
Cryogenic temperature
Ethanol
Fluorescence
Gold
High resolution electron microscopy
Iron oxides
Magnetic measurement
Magnetic properties
Metal oxides
Nanoclusters
Nanomaterials
Nanoparticles
Optical properties
Photoluminescence
Structural analysis
X ray powder diffraction
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Summary:Photoluminescent (PL) metal and metal oxide nanoclusters (NCs), with a size of just several nanometers, are a separate class of nanomaterials abundant with new attractive optical, physical, and chemical properties and biocompatibility. However, the synthesis of PL magnetic NCs via attachment of PL NCs to iron oxide-based nanoparticles (NPs) is still problematic. Motivated by this, herein, we report the development of a microwave-driven conjugation approach of red-fluorescent gold nanoclusters (BSA@AuNCs) to superparamagnetic NPs. Synthesized CoFe 2 O 4 @AuNCs possess strong photoluminescence in water and ethanol media as well as good colloidal and optical stability, and magnetization response. High-resolution transmission electron microscopy (HRTEM), steady-state and time-resolved photoluminescence spectroscopy, X-ray powder diffraction (XRD), and magnetic measurements from ambient to cryogenic temperatures were applied for structural characterization and evaluation of optical and magnetic properties of the synthesized species. We report the study of gold clusters' attachment to magnetic nanoparticles by microwave processing for red-luminescent magnetic species formation.
ISSN:2046-2069
2046-2069
DOI:10.1039/d2ra07242d