Synthesis of antipyrine based organic material for Zn2+ ion sensing and implication in logic gate analysis

Abstract

The antipyrine linked E allylic ester (BH-AP) ONO tridentate was synthesized, using acetate of Baylis-Hillman Adduct (BH) and antipyrine (AP) through SN2′ allylic substitution reaction.The newly synthesized ligand was characterized using IR and NMR spectroscopy.The ligand BH-AP was analyzed using UV–Visible and fluorescence techniques for its selective metal ion recognition properties. The emission spectroscopy exhibited the sensitivity and selectivity of the sensor for Zn2+ ion by significantly quenching the fluorescence intensity upon excitation at 268 nm. The 1:1 ratio binding stoichiometry and the binding constant value of 4.5796 × 10−6 M−1 were obtained for the ligand BH-AP with Zn2+ion. The appropriate combination of materials-AP, Zn2+and pH found to be suitable for NOR logic gate application.