A simply synthesized biphenyl substituted piperidin-4-one for the fluorescence chemosensing of Cd.

Ion-induced change in fluorescence is a straight-forward method for detection of toxic metal ions showing immediate response. Cadmium ions are toxic to the environment. We report in this paper a piperidine-4-one-based fluorescent chemosensor of Cd ions, designed and synthesized by a simple method. The compound is characterized using infra-red (IR) and H-NMR spectral techniques. The chemosensor showed Cd ion selectivity and sensitivity in aqueous solution. The stoichiometry and the binding constants were determined using fluorescence spectroscopy. Piperidine-4-one shows a 1:1 stoichiometric binding to Cd . The limit of detection of Cd was reported.