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Volume 11
Issue 19
10.3390/app11198903
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Article

Enhancement of the Luminescence Properties of Eu (III) Containing Paramagnetic Saponite Clays

by
Stefano Marchesi
1,
Chiara Bisio
1,2,* and
Fabio Carniato
1,*
1
Dipartimento di Scienze e Innovazione Tecnologica, Università degli Studi del Piemonte Orientale “Amedeo Avogadro”, 15121 Alessandria, Italy
2
CNR-SCITEC Istituto di Scienze e Tecnologie Chimiche “G. Natta”, Via C. Golgi 19, 20133 Milano, Italy
*
Authors to whom correspondence should be addressed.
Appl. Sci. 2021, 11(19), 8903; https://doi.org/10.3390/app11198903
Submission received: 30 August 2021 / Revised: 20 September 2021 / Accepted: 21 September 2021 / Published: 24 September 2021
(This article belongs to the Special Issue Advances in Magnetic Nanomaterials and Nanostructures)
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Abstract

In this study, 1,10-phenanthroline molecules were introduced in the interlayer space of a paramagnetic synthetic saponite clay containing both Eu3+ and Gd3+ ions in structural positions. Two samples with different loading of phenanthroline dye were prepared. The resulting hybrid materials possessed improved optical emission properties due to an efficient antenna effect from the phenanthroline to the Eu3+ centers; this effect was demonstrated to be higher than the metal-to-metal Gd3+-Eu3+ energy transfer previously studied. Insights on the relaxometric properties in aqueous solution of the solids after incorporation of the antenna groups were also obtained through NMR relaxometric analyses.
Keywords: europium; gadolinium; phenanthroline; clay; saponite; energy transfer; luminescence; relaxometry europium; gadolinium; phenanthroline; clay; saponite; energy transfer; luminescence; relaxometry
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MDPI and ACS Style

Marchesi, S.; Bisio, C.; Carniato, F. Enhancement of the Luminescence Properties of Eu (III) Containing Paramagnetic Saponite Clays. Appl. Sci. 2021, 11, 8903. https://doi.org/10.3390/app11198903

AMA Style

Marchesi S, Bisio C, Carniato F. Enhancement of the Luminescence Properties of Eu (III) Containing Paramagnetic Saponite Clays. Applied Sciences. 2021; 11(19):8903. https://doi.org/10.3390/app11198903

Chicago/Turabian Style

Marchesi, Stefano, Chiara Bisio, and Fabio Carniato. 2021. "Enhancement of the Luminescence Properties of Eu (III) Containing Paramagnetic Saponite Clays" Applied Sciences 11, no. 19: 8903. https://doi.org/10.3390/app11198903

APA Style

Marchesi, S., Bisio, C., & Carniato, F. (2021). Enhancement of the Luminescence Properties of Eu (III) Containing Paramagnetic Saponite Clays. Applied Sciences, 11(19), 8903. https://doi.org/10.3390/app11198903

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