A dual mode receptor appended with hydrazide moiety to track the presence of Pb2+and HS- ions in real samples

The phenothiazine and hydroxy-naphthyl substituted hydrazide based receptor PHN with dual detecting sites to monitor the Pb2+ ions and reversibly HS- ions was designed and well characterized. Both the receptor PHN and PHN + Pb2+ ensemble show excellent photo physical properties like superior selectivity and greater sensitivity. In addition, the receptor PHN and PHN + Pb2+ ensemble detects and quantifies both the Pb2+ ions and HS- ions even in its nanomolar concentration. The pH test also proves that the receptor PHN and PHN + Pb2+ ensemble acts as a suitable tool for biological applications with the apt physiological pH range of 4-11. The application on real samples was also done to prove the practical utility of the receptor PHN and PHN + Pb2+ ensemble.