Issue 54, 2021

Chemosensors based on N-heterocyclic dyes: advances in sensing highly toxic ions such as CN and Hg2+

Abstract

CN and Hg2+ ions are harmful to both the environment and human health, even at trace levels. Thus, alternative methods for their detection and quantification are highly desirable given that the traditional monitoring systems are expensive and require qualified personnel. Optical chemosensors (probes) have revolutionized the sensing of different species due to their high specificity and sensitivity, corresponding with their modular design. They have also been used in aqueous media and different pH ranges, facilitating their applications in various samples. The design of molecular probes is based on organic dyes, where the key species are N-heterocyclic compounds (NHCs) due to their proven photophysical properties, biocompatibility, and synthetic versatility, which favor diverse applications. Accordingly, this review aims to provide an overview of the reports from 2016 to 2021, in which fluorescent probes based on five- and six-membered N-heterocycles are used for the detection of CN and Hg2+ ions.

Graphical abstract: Chemosensors based on N-heterocyclic dyes: advances in sensing highly toxic ions such as CN− and Hg2+

Article information

Article type
Review Article
Submitted
01 sep 2021
Accepted
02 okt 2021
First published
21 okt 2021
This article is Open Access
Creative Commons BY license

RSC Adv., 2021,11, 34206-34234

Chemosensors based on N-heterocyclic dyes: advances in sensing highly toxic ions such as CN and Hg2+

M. Ríos, N. Bravo, C. Sánchez and J. Portilla, RSC Adv., 2021, 11, 34206 DOI: 10.1039/D1RA06567J

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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