Light-triggered redox activity of GdYVO 4 :Eu 3+ nanoparticles.

Autor: Yefimova SL; Institute for Scintillation Materials National Academy of Sciences of Ukraine, 60 Nauky Ave., 61072 Kharkiv, Ukraine. Electronic address: ephimova@isma.kharkov.ua., Maksimchuk PO; Institute for Scintillation Materials National Academy of Sciences of Ukraine, 60 Nauky Ave., 61072 Kharkiv, Ukraine., Hubenko KO; Institute for Scintillation Materials National Academy of Sciences of Ukraine, 60 Nauky Ave., 61072 Kharkiv, Ukraine., Omielaieva VV; Institute for Scintillation Materials National Academy of Sciences of Ukraine, 60 Nauky Ave., 61072 Kharkiv, Ukraine., Kavok NS; Institute for Scintillation Materials National Academy of Sciences of Ukraine, 60 Nauky Ave., 61072 Kharkiv, Ukraine., Klochkov VK; Institute for Scintillation Materials National Academy of Sciences of Ukraine, 60 Nauky Ave., 61072 Kharkiv, Ukraine., Malyukin YV; Institute for Scintillation Materials National Academy of Sciences of Ukraine, 60 Nauky Ave., 61072 Kharkiv, Ukraine., Semynozhenko VP; SSI 'Institute for Single Crystal' National Academy of Sciences of Ukraine, 60 Nauky Ave., 61072 Kharkiv, Ukraine.
Jazyk: angličtina
Zdroj: Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy [Spectrochim Acta A Mol Biomol Spectrosc] 2020 Dec 05; Vol. 242, pp. 118741. Date of Electronic Publication: 2020 Jul 21.
DOI: 10.1016/j.saa.2020.118741
Abstrakt: Light-triggered redox activity of small (d = 2 nm) GdYVO 4 :Eu 3+ nanoparticles (NPs) in aqueous solutions and lipid suspensions is reported. It has been revealed that depending on pre-treatment conditions (exposure to UV light or storage in the dark) the same NPs exhibit pro- or anti-oxidant properties. Pro-/anti-oxidant activity in aqueous solutions was evaluated by UV-vis spectroscopy using probe molecules for hydroxyl radicals (·OH) and superoxide anions (O 2 •- ). Lipid oxidation under the effect of NPs has been also analyzed. Multi-functional GdYVO 4 :Eu 3+ NPs are assumed to be a new theranostic agent in cancer therapy, which exhibit fluorescent properties, triggered redox activity and drug-carrier ability.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2020 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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