Synthesis of novel 1, 10-phenanthroline derivatives and it used as probes for sensitive detection of Zn2 and Cd2 metal ions–Spectroscopic and theoretical approach
Rajendran Satheeshkumar, Ramar Rajamanikandan, MalaichamyI lanchelian, Koray Sayin, Karnam Jayarampillai Rajendra Prasad
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
A novel class of unexpected 1,10-phenanthrolinederivatives were synthesized from 2,3-dihydroacridin-4(1H)-ones with 3-aminonaphthalen-2-carboxylic acid in presence of phosphorus oxychloride at 130 °C and simple perceptive emission intensity increasing assay was developed effectively to detect the very low concentrations of Zn2+ and Cd2+ ions. Emission intensity of compounds 3(a-c) directly related to the concentrations of Zn2+ and Cd2+ ions was due to metal chelating enhanced fluorescence (CHEF) effect and also its further validated by fluorescence lifetime measurement. Furthermore, the sensing mechanism for compounds 3(a-c) of Zn2+ and Cd2+ were sustained by theoretical calculations. Computational analysis results reveals that compounds 3(a-c) are more interested in Zn2+ ions than that of Cd2+ ions, while, compound 3c is more interested with Zn2+ and Cd2+ ions than those of the rest of the compounds. In addition, this proposed detection analysis has the direct application for monitoring Zn2+ and Cd2+ concentrations in tap and drinking water samples.
Absorption, Chemical stability, Coordination chemistry, Fluorescence, Ligand binding, Quantum yield, Sensors, Materials