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Cryogenic luminescent thermometers based on multinuclear Eu3+/Tb3+ mixed lanthanide polyoxometalates

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Abstract

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.

Graphical abstract: Cryogenic luminescent thermometers based on multinuclear Eu3+/Tb3+ mixed lanthanide polyoxometalates

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Publication details

The article was received on 23 Mar 2017, accepted on 06 Apr 2017 and first published on 06 Apr 2017


Article type: Communication
DOI: 10.1039/C7DT01058C
Citation: Dalton Trans., 2017, Advance Article
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    Cryogenic luminescent thermometers based on multinuclear Eu3+/Tb3+ mixed lanthanide polyoxometalates

    A. M. Kaczmarek, J. Liu, B. Laforce, L. Vincze, K. Van Hecke and R. Van Deun, Dalton Trans., 2017, Advance Article , DOI: 10.1039/C7DT01058C

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