期刊
ACS APPLIED MATERIALS & INTERFACES
卷 10, 期 24, 页码 20854-20861出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.8b04889
关键词
metal-organic frameworks; polymer film; mixed-matrix; dual-emitting; ratiometric temperature sensing
资金
- NSFC [21331006, 21520102001, 51572260]
- 973 Program [2014CB845605]
- Key Research Program of Frontier Sciences of the Chinese Academy of Sciences [QYZD-J-SSW-SLH045]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDA20000000]
A novel dual-emitting metal-organic framework based on Zr and Eu, named as UiO-66(Zr&Eu), was built using a clever strategy based on secondary building units. With the use of polymers, the obtained UiO-66(Zr&Eu) was subsequently deposited as thin films that can be utilized as smart thermometers. The UiO-66(Zr&Eu) polymer films can be used for the detection of temperature changes in the range of 237-337 K due to the energy transfer between the lanthanide ions (Eu in clusters) and the luminescent ligands, and the relative sensitivity reaches 4.26% K-1 at 337 K. Moreover, the sensitivity can be improved to 19.67% K-1 by changing the film thickness. In addition, the temperature-sensing performance of the films is superior to that of the powders, and the sensor can be reused 3 times without loss of performance.
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