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Medientyp:
E-Book
Titel:
Development of 2-Hydroxy-Naphthaldehyde Functionalized Schiff Base Chemosensor for Spectroscopic and Colorimetric Detection of Cu2+ and Pd2+ Ions
Beschreibung:
The colorimetric detection of metal ions is significantly applied for industrial, ecological, and medical applications. Here we synthesise 4-((Z)-1-(((Z)-(2-hydroxynaphthalen-1-yl)methylene)-hydrazineylidene)ethyl)benzene-1,3-diol a new chemosensor that acts as a sensitive and selective chemosensor for Cu2+ and Pd2+ ions to the ligand. The recognition is determined by redshift in UV-visible, emission intensity changes in fluorescence, colorless to yellow coloration, and cyclic voltammetric signal changes with the addition of Cu2+ and Pd2+ ions to the ligand. The insights into the color changes are described visually and under different wavelengths of light. The designed colorimetric sensing model is developed as paper, cotton, and mask-based assay for Pd2+ and Cu2+ ions. The chemosensor reversibility is checked with the addition of ethylenediaminetetraacetic acid (EDTA) and color changes observed with naked eyes. The infrared (IR) spectral analysis describes ligand's binding behavior towards selective metal ions. In addition, the chemosensor works for low detection with good association affinity