Development of aminoethylpyridine based N, N, N, O-donor fluorescent probes for the detection of Fe3+ and Hg2+ in aqueous media. (March 2020)

• Record Type: Journal Article
• Authors: Singh, Durgesh; Thakur, Neha; Raj, Krishna K.; Pandey, Rampal
• Is Part Of: Journal of physics. Volume 1504(2020)
• Publication Date: 2020-03
• Subjects: Heavy metal ions (HTMs) -- Aminoethylpyridine -- N, N, N, O-donor -- Fluorescent probes -- Fluorescent quenching -- Fluorescent Enhancement; Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/1504/1/012001
• Languages: English
• ISSNs: 1742-6588

Abstract

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, 1 H & 13 C 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 Fe 3+ ion whereas Hg 2+ 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 Fe 3+ and Hg 2+ in real water samples and/or in biological systems.