Pyridoxal derived chemosensor: Its application in anion sensing and molecular logic gate building

Abstract

A new chemosensor L has been synthesized using Schiff base reaction of pyridoxal with hydrazine and characterized by various spectroscopic techniques such as FTIR, ¹H NMR and mass spectrometry. The anion recognition ability of the synthesized sensor has been investigated by UV-vis, fluorescence and ¹H NMR methods. Among the tested anions, the developed sensor shows a naked-eye detectable color change from colorless to red and spectral changes in the presence of fluoride and acetate ions due to the partial deprotonation of the sensor. With a micromolar detection limit, the developed sensor is highly efficient and may be utilised for the colorimetric detection of fluoride/acetate ions. The developed sensor has been successfully fabricated in to the INHIBIT logic gate at molecular level.