Novel ultra-sensitive and highly selective cyanine sensors based on solvent-free microwave synthesis for the detection of trace hypochlorite ions in drinking water

3Citations
Citations of this article
5Readers
Mendeley users who have this article in their library.
Get full text

Abstract

The adoption of chlorine in drinking water disinfection with the determination of residual chlorine in the form of hypochlorite ion (ClO-) is in widespread demand. Several sensors including colorimetric, fluorometric, and electrochemical methods are currently in use, but detection limits and ease of application remain a challenge. In this work, two new cyanine derivatives-based ClO- sensors, that were prepared by solvent-free microwave synthesis, are reported. The two sensors are highly sensitive and selective to ClO-, exhibiting a noticeable color change visible to the naked eye. Additionally, the sensors can detect ClO- without interference from other potential water pollutants, with low detection limits of 7.43 ppb and 0.917 ppb based on absorption performance. When using fluorometric methods, the sensors' detection limits are pushed down to 0.025 ppb and 0.598 ppb for sensors I and II, respectively. The sensors can be loaded with paper strips for field and domestic detection of ClO- in tap water treatment installations. Using the quartz crystal microbalance (QCM) technique, these sensors showed strong detection sensitivity to ClO-, with detection limits of 0.256 ppm and 0.09 ppm for sensors I and II, respectively. Quantum chemical studies using density functional theory (DFT) calculations, natural bond orbital (NBO) analysis, molecular electrostatic potential (MESP), and time-dependent density functional theory (TD-DFT) supported the findings. The sensing mechanism is rationalized in terms of radical cation formation upon ClO- oxidation of cyanine sensors I and II.

References Powered by Scopus

Myeloperoxidase, a catalyst for lipoprotein oxidation, is expressed in human atherosclerotic lesions

1178Citations
N/AReaders
Get full text

Development of an Si-rhodamine-based far-red to near-infrared fluorescence probe selective for hypochlorous acid and its applications for biological imaging

539Citations
N/AReaders
Get full text

Chlorinative stress: An under appreciated mediator of neurodegeneration?

531Citations
N/AReaders
Get full text

Cited by Powered by Scopus

The utilization and advancement of quartz crystal Microbalance (QCM): A mini review

20Citations
N/AReaders
Get full text

Colorimetric and fluorometric dual-mode determination of hypochlorite based on redox-mediated quenching

6Citations
N/AReaders
Get full text

Monocationic versus dicationic-based monomethine cyanine dyes for ultrasensitive colorimetric detection of hypochlorite ion in water

0Citations
N/AReaders
Get full text

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Cite

CITATION STYLE

APA

Hafez, N. S., Amer, W. A., Okba, E. A., Sakr, M. A. S., Alganzory, H. H., & Ebeid, E. Z. M. (2023). Novel ultra-sensitive and highly selective cyanine sensors based on solvent-free microwave synthesis for the detection of trace hypochlorite ions in drinking water. Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, 303. https://doi.org/10.1016/j.saa.2023.123116

Readers' Discipline

Tooltip

Chemistry 2

100%

Save time finding and organizing research with Mendeley

Sign up for free