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Plasmonic behaviour of poly(2-ethyl-2-oxazoline)-coated gold nanoparticles for sensing and temperature-control applications

Year: 2025
Type: article
Abstract: Gold nanoparticles functionalized with xanthate-poly(2-ethyl-2-oxazoline) (PEtOx-AuNPs) were investigated as thermoresponsive hybrid nanomaterials with tunable optical and thermal properties. The PEtOx-AuNPs exhibited changes in surface plasmon resonance (SPR) and amplified Surface-Enhanced Raman Scattering (SERS) signals during the reversible lower critical solution temperature (LCST) transition of the PEtOx ligand. The effect of the PEtOx coating on the photophysical properties of AuNPs, particularly on heat generation efficiency upon photoexcitation by Z-scan photothermal lens spectroscopy, was investigated. The results demonstrate the potential of PEtOx-AuNPs for applications in temperature-sensitive drug delivery, photothermal therapy, nanoscale heat generation, and photonic devices.
DOI: 10.1039/d5na00243e
Authors: Oleg Yeshchenko, Léa Daoud, Pavlo Khort, Oles Fedotov, Julien-Bilal Zinoune, Georges Boudebs, Tony Breton, Catherine Passirani, Patrick Saulnier, Oksana Krupka
Institutions: Taras Shevchenko National University of Kyiv, Centre National de la Recherche Scientifique, Inserm, Micro et Nanomédecines translationnelles, Université d'Angers, Institut des Sciences et Technologies Moléculaires d'Angers
Language: English
Open Access status: gold
Estimated APC paid: $1,962
OpenAlex ID: W4410490728
FWCI: 0.955
Cites: 41
Cited by: 6
Related to: 10