A Novel L-Shaped Fluorescent Probe for AIE Sensing of Zinc (II) Ion by a DR/NIR Response

Overview

Journal Molecules

Publisher MDPI

Specialty Biology

Date 2021 Dec 10

PMID 34885935

Citations 2

Authors

Rosita Diana

Ugo Caruso

Francesco Silvio Gentile

Luigi Di Costanzo

Barbara Panunzi

Affiliations

Soon will be listed here.

Abstract

In the field of optical sensors, small molecules responsive to metal cations are of current interest. Probes displaying aggregation-induced emission (AIE) can solve the problems due to the aggregation-caused quenching (ACQ) molecules, scarcely emissive as aggregates in aqueous media and in tissues. The addition of a metal cation to an AIE ligand dissolved in solution can cause a "turn-on" of the fluorescence emission. Half-cruciform-shaped molecules can be a winning strategy to build specific AIE probes. Herein, we report the synthesis and characterization of a novel L-shaped fluorophore containing a benzofuran core condensed with 3-hydroxy-2-naphthaldehyde crossed with a nitrobenzene moiety. The novel AIE probe produces a fast colorimetric and fluorescence response toward zinc (II) in both in neutral and basic conditions. Acting as a tridentate ligand, it produces a complex with enhanced and red-shifted emission in the DR/NIR spectral range. The AIE nature of both compounds was examined on the basis of X-ray crystallography and DFT analysis.

Citing Articles

Tuning Photophysical Properties via Positional Isomerization of the Pyridine Ring in Donor-Acceptor-Structured Aggregation-Induced Emission Luminogens Based on Phenylmethylene Pyridineacetonitrile Derivatives.

Sun H, Chen S, Zhong A, Sun R, Jin J, Yang J Molecules. 2023; 28(7).

PMID: 37050045 PMC: 10096500. DOI: 10.3390/molecules28073282.

A DR/NIR Hybrid Polymeric Tool for Functional Bio-Coatings: Theoretical Study, Cytotoxicity, and Antimicrobial Activity.

Diana R, Gentile F, Concilio S, Petrella A, Belvedere R, Schibeci M Polymers (Basel). 2023; 15(4).

PMID: 36850168 PMC: 9967255. DOI: 10.3390/polym15040883.

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