Journal
DALTON TRANSACTIONS
Volume 46, Issue 18, Pages 5781-5785Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7dt01058c
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Funding
- Ghent University's Special Research Fund (BOF) [BOF15/PDO/091]
- Hercules Foundation [AUGE/11/029]
- 3D Structural Platform Aiming for Chemical Excellence
- Research Foundation - Flanders (FWO)
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Here, the excellent thermal sensing capability of a multinuclear lanthanide polyoxometalate in the cryogenic region (<100 K) is presented for the first time. Up till now, no lanthanide polyoxometalates have been studied for their use as ratiometric luminescent thermometers. The investigated Tb3+ polyoxometalate cluster is doped with 1.6% (P1) and 8.4% (P2) of Eu3+ ions. When excited into the Mo-O charge transfer bands, at room temperature only the emission of the Eu3+ ions is observed suggesting a very efficient energy transfer between Mo-O -> Tb3+-> Eu3+. Only in the cryogenic region the emission of Tb3+ is also witnessed.
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