Study of photophysical properties of bis-fluorophoreic type sensors and their application in the detection of metal ions
DOI:
https://doi.org/10.37636/recit.v23124136Keywords:
Sensor, Fluorophore, Ions, Metals, Water.Abstract
Industrialized cities like Tijuana dispose of a large amount of water with metallic elements content, as a result of by-products, which represent a health risk. A proposed alternative is the use of chemical sensors based on different mechanisms. The focus of this project is the study of bis-o-aminobenzamide macromolecules, as metal ion selector sensors with application in wastewater treatment. A series of five bis-o-aminobenzamide compounds were studied as chemical sensors capable of selecting and coordinating with metals dissolved in water, in addition to being able to remove these metals in the presence of the natural coagulant Pectin, which was extracted from the penca of the nopal. For this, different concentrations of the five compounds were prepared, the most suitable for the analyzes was selected and it was contacted with solutions of different ions. The compounds and their coordination were evaluated by fluorescence, UV-Visible and Zeta potential spectroscopies. In addition, SEM micrographs were obtained upon removal obtained. The five sensors evaluated have different fluorescence intensities. When in contact with some metal ions, a coordination was formed that reduces the emission of fluorescence. Fluorescent properties in solution were studied by varying the concentration of ligand and the study of its interaction with different metals of environmental interest was carried out. The influence of the nature of the central chain of interconnection on the fluorescent properties of the studied library was determined. These ligands have interesting fluorescent characteristics, which gives them a potential value as sensors for metals, presenting a sensitivity for the Cu +2 ion in all cases.Downloads
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