Fluorescent chemosensors not only could detect guest molecules especially rapidly and on-line, but also have the advantages such as high selectivity, high sensitivity and expedience. Among toxic chemical monitoring and environmental science, chemosensors with high selectivity and sensitivity to sense transition metal ions become a research upsurge. We have designed and synthesized a series of Schiff base ligand, and studied the properties of selective recognition for metal ions. Functionalized nanoparticles...