Pyrrolidine-Derived 1,2,3-Triazolyl Organosilane as ‘Turn-On’ Fluorescence Sensor for Zn(II) Ion: Synthesis, Antioxidant, Molecular Docking and DFT Studies

Abstract

The article emphasises the synthesis of pyrrolidine-derived 1,2,3-triazolyl organosilane 5 which was well characterised by utilising spectroscopic techniques such as NMR (¹H and ¹³C), IR, elemental analysis, UV–visible, fluorescence and mass spectrometry. The molecule exhibits exceptional sensitivity to Zn²⁺ in comparison to other ions, which is demonstrated by fluorescence spectroscopy and UV–visible and with detection limits of 3.622 × 10⁻⁷ and 1.893 × 10⁻⁷ M, respectively. The binding stoichiometry comes out to be 1:1 by using Job's plot approach and accordingly metal–ligand complex was synthesised and then characterised. Further, the molecule exhibits notable antioxidant property examined with DPPH assay. ‘Molecular docking’ was used to determine the binding interactions of molecule with superoxide dismutase (SOD) (PDB ID-1Z9P).