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Issue 23, 2018
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A highly sensitive luminescent ratiometric thermometer based on europium(III) and terbium(III) benzoylacetonate complexes chemically bonded to ethyldiphenylphosphine oxide functionalized polydimethylsiloxane

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Abstract

This work reports on a ratiometric optical temperature probe consisting of a pdms-eddpo(1%)-[Tb0.90Eu0.10(bzac)3](0.25%) membrane where lanthanide(III) complexes are chemically bonded to ethyldiphenylphosphine oxide functionalized polydimethylsiloxane. The ratiometric luminescent temperature probe shows a maximum relative thermal sensitivity of 11.05% K−1 at 203 K, being one of the most sensitive lanthanide systems reported so far. Besides that, the operational range of the ratiometric probe is 158–248 K, where few systems have high sensitivity. Energy transfer is evident from terbium(III) to europium(III) contributing to the high relative thermal sensitivity of the systems. The optical probe is reversible showing a temperature uncertainty smaller than 0.08 K in the operational range.

Graphical abstract: A highly sensitive luminescent ratiometric thermometer based on europium(iii) and terbium(iii) benzoylacetonate complexes chemically bonded to ethyldiphenylphosphine oxide functionalized polydimethylsiloxane

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Publication details

The article was received on 03 Sep 2018, accepted on 12 Oct 2018 and first published on 15 Oct 2018


Article type: Paper
DOI: 10.1039/C8NJ04489A
Citation: New J. Chem., 2018,42, 18541-18549
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    A highly sensitive luminescent ratiometric thermometer based on europium(III) and terbium(III) benzoylacetonate complexes chemically bonded to ethyldiphenylphosphine oxide functionalized polydimethylsiloxane

    D. A. Gálico, Í. O. Mazali and F. A. Sigoli, New J. Chem., 2018, 42, 18541
    DOI: 10.1039/C8NJ04489A

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