New substituted 1,2,3-triazoles for ratiometric recognition to Fe3+ ions

Natalia Selivanova; Marina Shulaeva; Vyacheslav Semenov; Yuriy Galyametdinov

doi:10.1016/j.saa.2023.123558

New substituted 1,2,3-triazoles for ratiometric recognition to Fe³⁺ ions

Spectrochim Acta A Mol Biomol Spectrosc. 2024 Jan 15:305:123558. doi: 10.1016/j.saa.2023.123558. Epub 2023 Oct 18.

Authors

Natalia Selivanova¹, Marina Shulaeva², Vyacheslav Semenov², Yuriy Galyametdinov³

Affiliations

¹ Department of Physical and Colloid Chemistry, Kazan National Research Technological University, Kazan, Tatarstan 420015, Russia. Electronic address: natsel@mail.ru.
² Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Str., 8, Kazan, 420088, Russia.
³ Department of Physical and Colloid Chemistry, Kazan National Research Technological University, Kazan, Tatarstan 420015, Russia.

PMID: 37866264
DOI: 10.1016/j.saa.2023.123558

Abstract

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 Fe³⁺ 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 Fe³⁺ ions by exhibiting an obvious pH-dependent color change from colorless to pink. Complexation of the ligands with Fe³⁺ ions was studied. The 1:1 stoichiometry and bonding sites of TR1_-Fe³⁺, and TR2_-Fe³⁺ complexes were elucidated by analyzing the Job plot. The association constants of 5.35 × 10⁵ M¹ for TR1_- Fe³⁺ and 3.58 × 10⁴ M¹ for TR2_-Fe³⁺ and detection limits 1.68 × 10^-8 and 2.52 × 10^-7 were determined from standard deviation and linear fittings.

Keywords: 2,3-triazole; Colorimetric sensor; Fe(3+) recognition; Substituted 1.