'Turn-ON' furfurylamine-based fluorescent sensor for Cd2+ion detection and its application in real water samples

The ability of the new furfurylamine-derived Schiff base ligand (E)-4-chloro-2-((((5-methylfuran-2-yl)methyl) imino)methyl)phenol (CFMP) to recognize metal ions as a chemosensor has been studied. According to thorough research on the several facets of metal sensing phenomena, the Schiff base ligand CFMP demonstrated selective colorimetric and fluorescence sensing behavior towards the Cd2+ ion in a methanol-water system with strong binding nature, which was easily visible to the human eye. Job's plot titrations were used to determine the metal-ligand complex's stoichiometry, and LCMS data served as further confirmation. The CFMP has a low detection limit (LOD) of 0.2345 mu M and shown outstanding fluorescence sensing activity in buffer fluid with a pH of 7.2. Investigations into the fluorescence characteristics of the CFMP and the metal complex in the solution state revealed an improvement in fluorescence emission intensity following complexation. Additionally, utilizing electronic absorption spectroscopic techniques on samples of lake and tap water, the use of Cd2+ ion detection in real water samples was investigated.

Automated summary

The ability of the new furfurylamine-derived Schiff base ligand CFMP to recognize Cd2+ ions as a chemosensor has been studied. The CFMP demonstrated selective colorimetric and fluorescence sensing behavior towards the Cd2+ ion in a methanol-water system with strong binding nature, easily visible to the human eye. Job's plot titrations and LCMS data confirmed the stoichiometry and complexation of the metal-ligand system, while fluorescence characteristics showed improved emission intensity upon complexation. Detection of Cd2+ ions in real water samples was also investigated.