ROBUST AND SELECTIVE ANALYSIS OF THE Co2+ IONS USING NEWLY PREPARED QUINOLINE-BASED CHEMOSENSORS AND DFT OPTIMIZATION
Year: 2025
Type: article
Abstract: A chemosensing method focused on sensitivity, selectivity, and reproducibility has been developed to identify Co2+ ions in various materials. Two new chemosensors (QHZ and QEDA) have been prepared by introducing the strong ligand groups (hydrazine and ethylenediamine) into quinoline molecules and characterized with spectroscopic techniques. High turn-off-fluorescence sensitivity, specifically to Co2+ ions, was demonstrated by both chemosensors. The fluorescence emission of QHZ and QEDA was at 507 and 502 nm, respectively, and they demonstrated outstanding photoluminescence properties. The sensing ability of the QHZ and QEDA toward Co2+ ions was tested by analyzing different samples from different sources at a nanomolar scale. The effect of the various functional groups in chemosensors was investigated in chemosensing analysis. The lowest energy structures and HOMO-LUMO orbitals of QHZ and QEDA were developed by performing DFT calculations. The interactions of Co2+ ions with chemosensors (QHZ and QEDA) were investigated by developing 3D structures of complexes using DFT.
Source: RASAYAN Journal of Chemistry
Language: English
Subfield: Spectroscopy
Field: Chemistry
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4411978005