Journal
TALANTA
Volume 208, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.talanta.2019.120354
Keywords
MOFs; LnMOFs; Ratiometric MOF thermometers; Energy transfer
Categories
Funding
- National Natural Science Foundation of China [21431002, 21871122]
- Fundamental Research Funds for the Central Universities [lzujbky2018-kb12]
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Temperature is an important physical parameter in the fields of human life, scientific research and industrial applications, which requires accurate measurements in physiology and pathology. The fast, accurate, non-invasive and non-touch detection of temperature is one of the most important research findings of lanthanide MOFs (LnMOFs). Herein, three dual-emitting LnMOFs hybrids Tb1-xEuxL (x = 0.05, 0.1 and 0.2) were fabricated as ratiometric MOF thermometers. In the binary co-doped system, the special energy transfer method (Tb3+ -> Eu3+) makes thermometers more sensitive and accurate. The detection range and maximum relative sensitivity (S-m) were investigated and compared with the reportorial materials. Luminescence explorations show that Tb0.9Eu0.1L can be used for sensing temperature in the range of 303-423 K and with a S-m of 1.75% K-1 at 423 K. Furthermore, PXRD experiment indicates that Tb0.9Eu0.1L has outstanding stability under simulated physiological environment, which makes the application of Tb0.9Eu0.1L to the detection of temperature in biomedical systems a reality.
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