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Inherently Eu 2+ /Eu 3+ Codoped Sc 2 O 3 Nanoparticles as High‐Performance Nanothermometers
Author(s) -
Pan Yue,
Xie Xiaoji,
Huang Qianwen,
Gao Chao,
Wang Yangbo,
Wang Lingxiao,
Yang Bingxiao,
Su Haiquan,
Huang Ling,
Huang Wei
Publication year - 2018
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201705256
Subject(s) - materials science , oleylamine , luminescence , nanoparticle , atmospheric temperature range , thermal decomposition , europium , analytical chemistry (journal) , excitation , single crystal , optoelectronics , nanotechnology , nuclear magnetic resonance , thermodynamics , chemistry , physics , organic chemistry , engineering , chromatography , electrical engineering
Luminescent nanothermometers have shown competitive superiority for contactless and noninvasive temperature probing especially at the nanoscale. Herein, we report the inherently Eu 2+ /Eu 3+ codoped Sc 2 O 3 nanoparticles synthesized via a one‐step and controllable thermolysis reaction where Eu 3+ is in‐situ reduced to Eu 2+ by oleylamine. The stable luminescence emission of Eu 3+ as internal standard and the sensitive response of Eu 2+ emission to temperature as probe comprise a perfect ratiometric nanothermometer with wide‐range temperature probing (77–267 K), high repeatability (>99.94%), and high relative sensitivity (3.06% K –1 at 267 K). The in situ reduction of Eu 3+ to Eu 2+ ensures both uniform distribution in the crystal lattice and simultaneous response upon light excitation of Eu 2+ /Eu 3+ . To widen this concept, Tb 3+ is codoped as additional internal reference for tunable temperature probing range.