Work

An on-off-on fluorescent bis(salamo)-like probe was developed for continuous and fast identification of Cu2+ and S2-

Year: 2024

Type: article

Abstract: A new bis(salamo)-like fluorescent probe TBS was constructed to realize continuous and fast identification of Cu 2+ and S 2− . Under an ultraviolet lamp, the probe TBS solution′s color changed from yellow to brown when copper(II) salt was added. However, when sodium sulfide was added, the solution′s color returned to yellow with a small amount of black solid precipitation at the bottom, indicating that the probe TBS has a fluorescence quenching effect on Cu 2+ . The addition of S 2− ion, fluorescence recovery was also observed. Experiments on ion selectivity , anti-interference and fluorescence titration of probe TBS on Cu 2+ and S 2− were carried out by fluorescence spectrometer. It was proved that probe TBS has the characteristics of high selectivity , strong anti-interference ability and fast response speed. The mechanism of continuous recognition of Cu 2+ and S 2− ions by probe TBS was proposed by job working curve, mass spectrometry and DFT studies. More importantly, the probe TBS can be made into a simple test strip for detecting Cu 2+ and S 2− ions in the environment, which greatly enhances the practical application value of the probe.

Source: Journal of Molecular Structure

DOI: 10.1016/j.molstruc.2024.140307

Authors: Le-Le Liu, Hao-Ying Niu, Lu-Lu Gan, Yang Zhang, Wen-Kui Dong

Language: English

Topic: Molecular Sensors and Ion Detection

Subfield: Spectroscopy

Field: Chemistry

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,570

Funder: Science and Technology Department of Gansu Province

Award: G3141952157