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

Overview

Journal Molecules

Publisher MDPI

Specialty Biology

Date 2021 Apr 30

PMID 33919489

Authors

Mauro Formica

Vieri Fusi

Daniele Paderni

Gianluca Ambrosi

Mario Inclan

Maria Paz Clares

Begona Verdejo

Enrique Garcia-Espana

Affiliations

Soon will be listed here.

Abstract

A scorpionate Zn 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.

Citing Articles

A New Bis-Urea Based Cage Receptor for Anions: Synthesis, Solid State Structures and Binding Studies.

Paderni D, Formica M, Macedi E, Giorgi L, Rossi P, Retini M Chem Asian J. 2024; 20(2):e202401258.

PMID: 39620392 PMC: 11741156. DOI: 10.1002/asia.202401258.

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