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New Coumarin Dipicolinate Europium Complexes with a Rich Chemical Speciation and Tunable Luminescence

Europium (III) luminescent chelates possess intrinsic photophysical properties that are extremely useful in a wide range of applications. The lack of examples of coumarin-based lanthanide complexes is mainly due to poor photo-sensitization attempts. However, with the appeal of using such a versatile...

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Autores principales: Di Pietro, Sebastiano, Iacopini, Dalila, Moscardini, Aldo, Bizzarri, Ranieri, Pineschi, Mauro, Di Bussolo, Valeria, Signore, Giovanni
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7956443/
https://www.ncbi.nlm.nih.gov/pubmed/33652775
http://dx.doi.org/10.3390/molecules26051265
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author Di Pietro, Sebastiano
Iacopini, Dalila
Moscardini, Aldo
Bizzarri, Ranieri
Pineschi, Mauro
Di Bussolo, Valeria
Signore, Giovanni
author_facet Di Pietro, Sebastiano
Iacopini, Dalila
Moscardini, Aldo
Bizzarri, Ranieri
Pineschi, Mauro
Di Bussolo, Valeria
Signore, Giovanni
author_sort Di Pietro, Sebastiano
collection PubMed
description Europium (III) luminescent chelates possess intrinsic photophysical properties that are extremely useful in a wide range of applications. The lack of examples of coumarin-based lanthanide complexes is mainly due to poor photo-sensitization attempts. However, with the appeal of using such a versatile scaffold as antenna, especially in the development of responsive molecular probes, it is worth the effort to research new structural motifs. In this work, we present a series of two new tris coumarin-dipicolinate europium (III) complexes, specifically tailored to be either a mono or a dual emitter, tuning their properties with a simple chemical modification. We also encountered a rich chemical speciation in solution, studied in detail by means of paramagnetic NMR and emission spectroscopy.
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spelling pubmed-79564432021-03-16 New Coumarin Dipicolinate Europium Complexes with a Rich Chemical Speciation and Tunable Luminescence Di Pietro, Sebastiano Iacopini, Dalila Moscardini, Aldo Bizzarri, Ranieri Pineschi, Mauro Di Bussolo, Valeria Signore, Giovanni Molecules Article Europium (III) luminescent chelates possess intrinsic photophysical properties that are extremely useful in a wide range of applications. The lack of examples of coumarin-based lanthanide complexes is mainly due to poor photo-sensitization attempts. However, with the appeal of using such a versatile scaffold as antenna, especially in the development of responsive molecular probes, it is worth the effort to research new structural motifs. In this work, we present a series of two new tris coumarin-dipicolinate europium (III) complexes, specifically tailored to be either a mono or a dual emitter, tuning their properties with a simple chemical modification. We also encountered a rich chemical speciation in solution, studied in detail by means of paramagnetic NMR and emission spectroscopy. MDPI 2021-02-26 /pmc/articles/PMC7956443/ /pubmed/33652775 http://dx.doi.org/10.3390/molecules26051265 Text en © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Di Pietro, Sebastiano
Iacopini, Dalila
Moscardini, Aldo
Bizzarri, Ranieri
Pineschi, Mauro
Di Bussolo, Valeria
Signore, Giovanni
New Coumarin Dipicolinate Europium Complexes with a Rich Chemical Speciation and Tunable Luminescence
title New Coumarin Dipicolinate Europium Complexes with a Rich Chemical Speciation and Tunable Luminescence
title_full New Coumarin Dipicolinate Europium Complexes with a Rich Chemical Speciation and Tunable Luminescence
title_fullStr New Coumarin Dipicolinate Europium Complexes with a Rich Chemical Speciation and Tunable Luminescence
title_full_unstemmed New Coumarin Dipicolinate Europium Complexes with a Rich Chemical Speciation and Tunable Luminescence
title_short New Coumarin Dipicolinate Europium Complexes with a Rich Chemical Speciation and Tunable Luminescence
title_sort new coumarin dipicolinate europium complexes with a rich chemical speciation and tunable luminescence
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7956443/
https://www.ncbi.nlm.nih.gov/pubmed/33652775
http://dx.doi.org/10.3390/molecules26051265
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