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A Luminescent Molecular Thermometer for Long-Term Absolute Temperature Measurements at the Nanoscale

Authors

  • Carlos D. S. Brites,

    1. Departamento de Física and CICECO, Universidade de Aveiro, 3810–193 Aveiro (Portugal)
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  • Patricia P. Lima,

    1. Departamento de Física and CICECO, Universidade de Aveiro, 3810–193 Aveiro (Portugal)
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  • Nuno J. O. Silva,

    1. Departamento de Física and CICECO, Universidade de Aveiro, 3810–193 Aveiro (Portugal)
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  • Angel Millán,

    1. Departamento de Fisica de la Materia Condensada, Facultad de Ciencias and Instituto de, Ciencia de Materiales de Aragón, CSIC–Universidad de Zaragoza, 50009 Zaragoza (Spain)
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  • Vitor S. Amaral,

    1. Departamento de Física and CICECO, Universidade de Aveiro, 3810–193 Aveiro (Portugal)
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  • Fernando Palacio,

    Corresponding author
    1. Departamento de Fisica de la Materia Condensada, Facultad de Ciencias and Instituto de, Ciencia de Materiales de Aragón, CSIC–Universidad de Zaragoza, 50009 Zaragoza (Spain)
    • Departamento de Fisica de la Materia Condensada, Facultad de Ciencias and Instituto de, Ciencia de Materiales de Aragón, CSIC–Universidad de Zaragoza, 50009 Zaragoza (Spain).
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  • Luís D. Carlos

    Corresponding author
    1. Departamento de Física and CICECO, Universidade de Aveiro, 3810–193 Aveiro (Portugal)
    • Departamento de Física and CICECO, Universidade de Aveiro, 3810–193 Aveiro (Portugal)
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Abstract

A unique Eu3+/Tb3+ luminescent self-referencing nanothermometer allowing absolute measurements in the 10–350 K temperature range and sub-micrometer spatial resolution is reported (see Figure). It has up to 4.9%·K−1 temperature sensitivity and high photostability for long-term use. The combination of molecular thermometry, superparamagnetism and luminescence in a nanometric host matrix provides multifunctionality opening the way for new exciting applications.

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