Efficient up-conversion in Yb:Er:NaT(XO4)2 thermal nanoprobes. Imaging of their distribution in a perfused mouse

C Zaldo, MD Serrano, X Han, C Cascales, M Cantero, L Montoliu, E Arza, VR Caiolfa, M Zamai

Research output: Contribution to journalArticle

Abstract

Yb and Er codoped NaT(XO 4 ) 2 (T = Y, La, Gd, Lu and X = Mo, W) disordered oxides show a green (Er3+ related) up-conversion (UC) efficiency comparable to that of Yb:Er:β-NaYF4 compound and unless 3 times larger UC ratiometric thermal sensitivity. The similar UC efficiency of Yb:Er doped NaT(XO 4 ) 2 and β-NaYF4 compounds allowed testing equal subcutaneous depths of ex-vivo chicken tissue in both cases. This extraordinary behavior for NaT (XO 4 ) 2 oxides with large cutoff phonon energy (h 920 cm-1) is ascribed to 4F9/2 electron population recycling to higher energy 4G11/2 level by a phonon assisted transition. Crystalline nanoparticles of Yb:Er:NaLu(MoO 4 ) 2 have been synthesized by sol-gel with sizes most commonly in the 50-80 nm range, showing a relatively small reduction of the UC efficiency with regards to bulk materials. Fluorescence lifetime and multiphoton imaging microscopies show that these nanoparticles can be efficiently distributed to all body organs of a perfused mouse. © 2017 Zaldo et al.This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Original languageEnglish
Article numbere0177596
JournalPLoS One
Volume12
Issue number5
DOIs
Publication statusPublished - 2017

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Phonons
Nanoprobes
nanoparticles
Nanoparticles
Oxides
Conversion efficiency
oxides
Hot Temperature
image analysis
heat
Imaging techniques
mice
energy
Recycling
Polymethyl Methacrylate
Licensure
recycling
Reproduction
Microscopy
Chickens

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Zaldo, C., Serrano, MD., Han, X., Cascales, C., Cantero, M., Montoliu, L., ... Zamai, M. (2017). Efficient up-conversion in Yb:Er:NaT(XO4)2 thermal nanoprobes. Imaging of their distribution in a perfused mouse. PLoS One, 12(5), [e0177596]. https://doi.org/10.1371/journal.pone.0177596

Efficient up-conversion in Yb:Er:NaT(XO4)2 thermal nanoprobes. Imaging of their distribution in a perfused mouse. / Zaldo, C; Serrano, MD; Han, X; Cascales, C; Cantero, M; Montoliu, L; Arza, E; Caiolfa, VR; Zamai, M.

In: PLoS One, Vol. 12, No. 5, e0177596, 2017.

Research output: Contribution to journalArticle

Zaldo, C, Serrano, MD, Han, X, Cascales, C, Cantero, M, Montoliu, L, Arza, E, Caiolfa, VR & Zamai, M 2017, 'Efficient up-conversion in Yb:Er:NaT(XO4)2 thermal nanoprobes. Imaging of their distribution in a perfused mouse', PLoS One, vol. 12, no. 5, e0177596. https://doi.org/10.1371/journal.pone.0177596
Zaldo, C ; Serrano, MD ; Han, X ; Cascales, C ; Cantero, M ; Montoliu, L ; Arza, E ; Caiolfa, VR ; Zamai, M. / Efficient up-conversion in Yb:Er:NaT(XO4)2 thermal nanoprobes. Imaging of their distribution in a perfused mouse. In: PLoS One. 2017 ; Vol. 12, No. 5.
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