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Updated: Sep 14, 2025

Fabrication and Testing of Photonic Thermometers
Published on: October 24, 2018
Perovskite nanocrystals@covalent organic framework as a nanothermometer for sensitive temperature sensing
Huijun Liang1,2, Xinyu Wang1,2, Hongjun Chen1,3
1School of Chemistry and Materials Engineering, Xinxiang University, Xinxiang 453003, China. 95lhj@163.com.
None:
Perovskite nanocrystal-based temperature sensors have drawn extensive attention. Improving the photostability of perovskites and their sensitivity to temperature are urgent issues that need to be addressed. Herein, a nanothermometer for color-changing temperature indicators is designed based on perovskite nanocrystals encapsulated in a covalent organic framework (CsPbBr3 NCs@COF-V). Different temperature-response fluorescence behaviors originate from the photoluminescence of CsPbBr3 NCs at 522 nm. CsPbBr3 NCs@COF-V achieves temperature sensing in the range of 20-89 °C and shows high potential as a thermometer for monitoring the body temperature. Significantly, spherical COF-V boosts fluorescence stability, fluorescence lifetime, and sensitivity to temperature of CsPbBr3 NCs.
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