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Article

Thiophenyl Anilato-Based NIR-Emitting Lanthanide (LnIII = Er, Yb) Dinuclear Complexes

by
Fabio Manna
1,*,
Mariangela Oggianu
1,
Valentina Mameli
1,
Stefano Lai
2,
Angelica Simbula
2,
Francesco Quochi
2,*,
Narcis Avarvari
3 and
Maria Laura Mercuri
1
1
Dipartimento di Scienze Chimiche e Geologiche, Università di Cagliari, Complesso Universitario di Monserrato, S.P. 8 Km 0.700, I-09042 Monserrato, Italy
2
Dipartimento di Fisica, Università di Cagliari, Complesso Universitario di Monserrato, S.P. 8 Km 0.700, I-09042 Monserrato, Italy
3
Laboratoire MOLTECH-Anjou UMR 6200, UFR Sciences, CNRS, Université d’Angers, Bât. K, 2 Bd. Lavoisier, I-49045 Angers, France
*
Authors to whom correspondence should be addressed.
Molecules 2024, 29(23), 5804; https://doi.org/10.3390/molecules29235804
Submission received: 23 October 2024 / Revised: 23 November 2024 / Accepted: 5 December 2024 / Published: 9 December 2024
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Abstract

By combining ErIII and YbIII ions with 3,6-dithiophene-anilate (Th2An) and scorpionate hydrotris(pyrazol-1-yl)borate (HBpz3−) ligands new luminescent dinuclear complexes are obtained. The two materials formulated as [((HB(pz)3)2Yb)2(μ-th2An)]·4DCM·1.3H2O 1Yb and [((HB(pz)3)2Er)2(μ-th2An)]·4DCM·1.8H2O 1Er, respectively, have been structurally characterized by SC-XRD and PXRD studies. This study presents a comprehensive investigation of the photophysical properties of the Th2An ligand for the first time. Our findings reveal the crucial role of the thiophene anilate as an effective optical antenna, which sensitizes near-infrared (NIR)-emitting lanthanide ions, specifically ErIII and YbIII. The significant impact of vibrational quenching on the LnIII NIR emission efficiency has been also highlighted.
Keywords: anilates; antenna effect; lanthanides; NIR emission; vibrational quenching anilates; antenna effect; lanthanides; NIR emission; vibrational quenching
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MDPI and ACS Style

Manna, F.; Oggianu, M.; Mameli, V.; Lai, S.; Simbula, A.; Quochi, F.; Avarvari, N.; Mercuri, M.L. Thiophenyl Anilato-Based NIR-Emitting Lanthanide (LnIII = Er, Yb) Dinuclear Complexes. Molecules 2024, 29, 5804. https://doi.org/10.3390/molecules29235804

AMA Style

Manna F, Oggianu M, Mameli V, Lai S, Simbula A, Quochi F, Avarvari N, Mercuri ML. Thiophenyl Anilato-Based NIR-Emitting Lanthanide (LnIII = Er, Yb) Dinuclear Complexes. Molecules. 2024; 29(23):5804. https://doi.org/10.3390/molecules29235804

Chicago/Turabian Style

Manna, Fabio, Mariangela Oggianu, Valentina Mameli, Stefano Lai, Angelica Simbula, Francesco Quochi, Narcis Avarvari, and Maria Laura Mercuri. 2024. "Thiophenyl Anilato-Based NIR-Emitting Lanthanide (LnIII = Er, Yb) Dinuclear Complexes" Molecules 29, no. 23: 5804. https://doi.org/10.3390/molecules29235804

APA Style

Manna, F., Oggianu, M., Mameli, V., Lai, S., Simbula, A., Quochi, F., Avarvari, N., & Mercuri, M. L. (2024). Thiophenyl Anilato-Based NIR-Emitting Lanthanide (LnIII = Er, Yb) Dinuclear Complexes. Molecules, 29(23), 5804. https://doi.org/10.3390/molecules29235804

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