Lead is a highly toxic poison for the human body. Lead poisoning is a fatal condition severely affecting the mental and physical development of children younger than 4-5 years. Among various chemo sensors, heterocyclic derivatives are widely used to chelate toxic metal ions, leading to changes in their optical, absorbance, and spectroscopic properties. In this study, coumarin heterocyclic hybrids C1-C6 were synthesized by reacting different classes of amine, pyrrole, and thiadiazoles with bromo acetyl coumarin at room temperature. The C1-C6 probes are studied for their metal binding ability in aqueous acetonitrile for Cu