D. Singh, N. Thakur, K. K. Raj
Mar 1, 2020
Citations
1
Influential Citations
4
Citations
Journal
Journal of Physics: Conference Series
Abstract
A couple of 2-aminoethylpyridine based fluorescent compounds (E)-1-((2-(5-nitropyridin-2-ylamino)ethylimino)methyl)naphthalen-2-ol (1) and (E)-4-nitro-2-((2-(5-nitropyridin-2-ylamino)ethylimino)methyl)phenol (2) have been designed and synthesized by setting up reactions of N-(2-aminoethyl)-5-nitropyridin-2-amine with 2-hydroxy-1-naphthaldehyde and 2-hydroxy-5-nitrobenzaldehyde, respectively. Both the probes have been characterized by elemental analyses, FTIR, 1H & 13C NMR, UV/vis and fluorescence spectral techniques. Furthermore the sensing behavior of 1 and 2 towards various metal ions were examined via UV/vis and fluorescence studies. The fluorescence of 1 and 2 enhanced upon interaction with Fe3+ ion whereas Hg2+ induced small fluorescence quenching of 1 and enhancement of fluorescence in 2. The selectivity and sensitivity assay ensured by 2 remains unaltered in presence of interfering metal ions. Hence, among these two chemosensors only 2 may be useful for practical application of detection and estimation of trace Fe3+ and Hg2+ in real water samples and/or in biological systems.