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Synthesis, Cytotoxicity Assessment and Optical Properties Characterization of Colloidal GdPO4:Mn2+, Eu3+ for High Sensitivity Luminescent Nanothermometers Operating in the Physiological Temperature Range.


ABSTRACT: Herein, a novel synthesis method of colloidal GdPO4:Mn2+,Eu3+ nanoparticles for luminescent nanothermometry is proposed. XRD, TEM, DLS, and zeta potential measurements confirmed the crystallographic purity and reproducible morphology of the obtained nanoparticles. The spectroscopic properties of GdPO4:Mn2+,Eu3+ with different amounts of Mn2+ and Eu3+ were analyzed in a physiological temperature range. It was found that GdPO4:1%Eu3+,10%Mn2+ nanoparticles revealed extraordinary performance for noncontact temperature sensing with relative sensitivity SR = 8.88%/°C at 32 °C. Furthermore, the biocompatibility and safety of GdPO4:15%Mn2+,1%Eu3+ was confirmed by cytotoxicity studies. These results indicated that colloidal GdPO4 doped with Mn2+ and Eu3+ is a very promising candidate as a luminescent nanothermometer for in vitro applications.

SUBMITTER: Maciejewska K 

PROVIDER: S-EPMC7152838 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature

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Synthesis, Cytotoxicity Assessment and Optical Properties Characterization of Colloidal GdPO<sub>4</sub>:Mn<sup>2+</sup>, Eu<sup>3+</sup> for High Sensitivity Luminescent Nanothermometers Operating in the Physiological Temperature Range.

Maciejewska K K   Poźniak B B   Tikhomirov M M   Kobylińska A A   Marciniak L L  

Nanomaterials (Basel, Switzerland) 20200228 3


Herein, a novel synthesis method of colloidal GdPO<sub>4</sub>:Mn<sup>2+</sup>,Eu<sup>3+</sup> nanoparticles for luminescent nanothermometry is proposed. XRD, TEM, DLS, and zeta potential measurements confirmed the crystallographic purity and reproducible morphology of the obtained nanoparticles. The spectroscopic properties of GdPO<sub>4</sub>:Mn<sup>2+</sup>,Eu<sup>3+</sup> with different amounts of Mn<sup>2+</sup> and Eu<sup>3+</sup> were analyzed in a physiological temperature range. It was  ...[more]

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