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Tuning the sensitivity of lanthanide activated NIR nanothermometers in the biological windows

Abstract

Lanthanide activated SrF2 nanoparticles with a multishell architecture have been investigated as optical thermometers in the biological windows. A ratiometric approach, based on the relative changes in the intensities of different lanthanide (Nd3+ and Yb3+) NIR emissions, is applied to investigate the thermometric properties of the nanoparticles. It was found that a proper doping with Er3+ ions can increase the thermometric properties of Nd-Yb coupled systems. In addition, a core containing Yb and Tm can generate light in the visible, and also in the UV regions upon near-infrared (NIR) laser excitation at 980 nm. The multishell structure, combined with a rational choice of the dopants, proves to be of particular importance to control and enhance the performance of nanoparticles as NIR nanothermometers.

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Publication details

The article was received on 06 Sep 2017, accepted on 28 Dec 2017 and first published on 29 Dec 2017


Article type: Paper
DOI: 10.1039/C7NR06141B
Citation: Nanoscale, 2017, Accepted Manuscript
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    Tuning the sensitivity of lanthanide activated NIR nanothermometers in the biological windows

    P. Cortelletti, A. Skripka, C. Facciotti, M. Pedroni, G. Caputo, N. Pinna, M. Quintanilla, A. Benayas, F. Vetrone and A. Speghini, Nanoscale, 2017, Accepted Manuscript , DOI: 10.1039/C7NR06141B

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