Quinoline based probes: Large blue shifted fluorescent and electrochemical sensing of cerium ion and its biological applications
N. Bhuvanesh, S. Suresh, K. Velmurugan, A. Thamilselvan, R. Nandhakumar
Journal of Photochemistry and Photobiology A: Chemistry
Quinoline based fluorescent probes were formulated for the precise detection of cerium ions. Probes 1 and 2 detect Ce3+ ion as opposed to other metal ions through fluorescence in HEPES buffered CH3CN-H2O (1:1, (v/v) HEPES =50 mM, pH = 7.4) solution. The Ce3+ ion recognition process follows the π to π* transitions and intramolecular charge transfer (ICT) mechanisms. The LOD (Limit Of Detection) of probes 1 and 2 for sensing Ce3+ ion were found to be 1.60 × 10−9 M and 0.17 × 10−9 M, respectively. These probes are further utilized to detect Ce3+ ion by electrochemical studies. The practical applications of the probes are tested for varied biological applications.
Absorption, Fluorescence, Chemical stability, Ligand binding, Quantitation, Sensors, Agriculture and environmental, Materials