New substituted 1,2,3-triazoles for ratiometric recognition to Fe ions.

Spectrochim Acta A Mol Biomol Spectrosc

Department of Physical and Colloid Chemistry, Kazan National Research Technological University, Kazan, Tatarstan 420015, Russia.

Published: January 2024

Two novel click derived sensory systems for different derivatives connected via a triazole linkage have been developed as a component of a chemosensor with sensitive towards Fe ions. The 1-octyl-4-carboxyl-1,2,3-triazole (TR1) system demonstrated sensitivity to calcium ion. The 1,3-bis(4-hydroxycarbamoyl-1,2,3-triazol-1-yl)xylylene (TR2) system was shown to possess a preferential detection capability as a colorimetric probe for Fe ions by exhibiting an obvious pH-dependent color change from colorless to pink. Complexation of the ligands with Fe ions was studied. The 1:1 stoichiometry and bonding sites of TR1Fe, and TR2Fe complexes were elucidated by analyzing the Job plot. The association constants of 5.35 × 10 M for TR1 Fe and 3.58 × 10 M for TR2Fe and detection limits 1.68 × 10 and 2.52 × 10 were determined from standard deviation and linear fittings.

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http://dx.doi.org/10.1016/j.saa.2023.123558DOI Listing

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