A fluorometric sensor for Tin(II) detection using Azomethine-Triazole organosilane: Turn-off mechanism, antioxidant activity and molecular docking insights.

The need for metal ion sensors is increasing daily due to the harmful impact of metal ions on human health, the environment, and the aquatic ecosystem. The present study highlights synthesizing an azomethine functionalized triazole allied organosilane (5a) probe as a turn-off fluorometric sensor for Sn(II) recognition with high anti-interference even when the other metal ions are present. The probe (5a) offers a detection limit of up to 6.4 × 10-10 M which is much lesser than the WHO acceptable limit (2 µg/L) of Sn(II) in drinking water. The fluorometric and absorbance-based UV-visible spectroscopy method is used for this analysis due to their ease of sample preparation, low cost, quick analysis, high sensitivity and selectivity, and less time-consuming nature. The real sample analysis (recovery % more than 97) results of the probe (5a) prove that it can detect the Sn(II) in different water samples increasing its practical applicability. The biological activities of the presently synthesized compounds were also studied providing valuable insights into their biological potential. Probe (5a) showed effective antioxidant potential. Bacterial domain inhibition by Probe (5a) was also analyzed using molecular docking, which showed good inhibitory activity by the probe (5a).