Tuning the sensitivity of lanthanide-activated NIR nanothermometers in the biological windows
authors Cortelletti, P; Skripka, A; Facciotti, C; Pedroni, M; Caputo, G; Pinna, N; Quintanilla, M; Benayas, A; Vetrone, F; Speghini, A
nationality International
journal NANOSCALE
keywords UP-CONVERSION LUMINESCENCE; CORE-SHELL NANOPARTICLES; ENERGY-TRANSFER; QUANTUM DOTS; FLUORESCENT NANOTHERMOMETERS; UPCONVERTING NANOPARTICLES; CORE/SHELL NANOPARTICLES; FLUORIDE NANOCRYSTALS; HYBRID NANOSTRUCTURES; OPTICAL SPECTROSCOPY
abstract Lanthanide-activated SrF2 nanoparticles with a multishell architecture were 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 was applied to investigate the thermometric properties of the nanoparticles. It was found that an appropriate doping with Er3+ ions can increase the thermometric properties of the Nd3+-Yb3+ coupled systems. In addition, a core containing Yb3+ and Tm3+ can generate light in the visible and UV regions upon near-infrared (NIR) laser excitation at 980 nm. The multishell structure combined with the rational choice of dopants proves to be particularly important to control and enhance the performance of nanoparticles as NIR nanothermometers.
publisher ROYAL SOC CHEMISTRY
issn 2040-3364
year published 2018
volume 10
issue 5
beginning page 2568
ending page 2576
digital object identifier (doi) 10.1039/c7nr06141b
web of science category Chemistry, Multidisciplinary; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied
subject category Chemistry; Science & Technology - Other Topics; Materials Science; Physics
unique article identifier WOS:000424075400045
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journal analysis (jcr 2017):
journal impact factor 7.233
5 year journal impact factor 7.713
category normalized journal impact factor percentile 86.592
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