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Quinoline-based compound for explosive 2,4,6-trinitrophenol sensing: experimental and DFT-D3 studies

Abstract

A quinoline-based Schiff base compound, 2,5-dimethylbis(quinolin-2-ylmethylene)benzene-1,4-diamine (DQB), has been found to be chemosensor for 2,4,6-trinitrophenol (TNP). DQB has been synthesized by condensation between two eqv. of quinoline-4-carboxaldehyde and one eqv. of 2,5-dimethyl-1,4-diaminobenzene in methanol under ambient reaction conditions and characterized by standard spectroscopic methods. It shows emission band at 440 nm with high intensity (λex = 390 nm). Emission intensity is quenched severely in the presence of TNP while other nitroaromatic compounds fail to reduce the intensity signifying high selectivity towards TNP. The fluorescence quenching mechanism can be explained by theoretical calculations as RET-ICT based pathways.

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Publication details

The article was received on 17 Feb 2018, accepted on 29 Mar 2018 and first published on 02 Apr 2018


Article type: Paper
DOI: 10.1039/C8NJ00817E
Citation: New J. Chem., 2018, Accepted Manuscript
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    Quinoline-based compound for explosive 2,4,6-trinitrophenol sensing: experimental and DFT-D3 studies

    S. Halder, P. Ghosh, A. Hazra, P. Banerjee and P. Roy, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C8NJ00817E

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