A Metal-Based Receptor for Selective Coordination and Fluorescent Sensing of Chloride

A scorpionate Zn(2+) complex, constituted by a macrocyclic pyridinophane core attached to a pendant arm containing a fluorescent pyridyl-oxadiazole-phenyl unit (PyPD), has been shown to selectively recognize chloride anions, giving rise to changes in fluorescence emission that are clearly visible un...

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Autores principales: Formica, Mauro, Fusi, Vieri, Paderni, Daniele, Ambrosi, Gianluca, Inclán, Mario, Clares, Maria Paz, Verdejo, Begoña, García-España, Enrique
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8073790/
https://www.ncbi.nlm.nih.gov/pubmed/33919489
http://dx.doi.org/10.3390/molecules26082352
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author Formica, Mauro
Fusi, Vieri
Paderni, Daniele
Ambrosi, Gianluca
Inclán, Mario
Clares, Maria Paz
Verdejo, Begoña
García-España, Enrique
author_facet Formica, Mauro
Fusi, Vieri
Paderni, Daniele
Ambrosi, Gianluca
Inclán, Mario
Clares, Maria Paz
Verdejo, Begoña
García-España, Enrique
author_sort Formica, Mauro
collection PubMed
description A scorpionate Zn(2+) complex, constituted by a macrocyclic pyridinophane core attached to a pendant arm containing a fluorescent pyridyl-oxadiazole-phenyl unit (PyPD), has been shown to selectively recognize chloride anions, giving rise to changes in fluorescence emission that are clearly visible under a 365 nm UV lamp. This recognition event has been studied by means of absorption, fluorescence, and NMR spectroscopy, and it involves the intramolecular displacement of the PyPD unit by chloride anions. Moreover, since the chromophore is not removed from the system after the recognition event, the fluorescence can readily be restored by elimination of the bound chloride anion.
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spelling pubmed-80737902021-04-27 A Metal-Based Receptor for Selective Coordination and Fluorescent Sensing of Chloride Formica, Mauro Fusi, Vieri Paderni, Daniele Ambrosi, Gianluca Inclán, Mario Clares, Maria Paz Verdejo, Begoña García-España, Enrique Molecules Article A scorpionate Zn(2+) complex, constituted by a macrocyclic pyridinophane core attached to a pendant arm containing a fluorescent pyridyl-oxadiazole-phenyl unit (PyPD), has been shown to selectively recognize chloride anions, giving rise to changes in fluorescence emission that are clearly visible under a 365 nm UV lamp. This recognition event has been studied by means of absorption, fluorescence, and NMR spectroscopy, and it involves the intramolecular displacement of the PyPD unit by chloride anions. Moreover, since the chromophore is not removed from the system after the recognition event, the fluorescence can readily be restored by elimination of the bound chloride anion. MDPI 2021-04-18 /pmc/articles/PMC8073790/ /pubmed/33919489 http://dx.doi.org/10.3390/molecules26082352 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Formica, Mauro
Fusi, Vieri
Paderni, Daniele
Ambrosi, Gianluca
Inclán, Mario
Clares, Maria Paz
Verdejo, Begoña
García-España, Enrique
A Metal-Based Receptor for Selective Coordination and Fluorescent Sensing of Chloride
title A Metal-Based Receptor for Selective Coordination and Fluorescent Sensing of Chloride
title_full A Metal-Based Receptor for Selective Coordination and Fluorescent Sensing of Chloride
title_fullStr A Metal-Based Receptor for Selective Coordination and Fluorescent Sensing of Chloride
title_full_unstemmed A Metal-Based Receptor for Selective Coordination and Fluorescent Sensing of Chloride
title_short A Metal-Based Receptor for Selective Coordination and Fluorescent Sensing of Chloride
title_sort metal-based receptor for selective coordination and fluorescent sensing of chloride
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8073790/
https://www.ncbi.nlm.nih.gov/pubmed/33919489
http://dx.doi.org/10.3390/molecules26082352
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