Abstract
Special attention is given to the development of rapid and sensitive detection of nitroaromatic explosives for homeland security and environmental concerns. As part of our contribution to the detection of nitroaromatic explosives, fluorescent materials (A), (B) and (C) were synthesized from the reaction of 1,2-diaminocyclohexane with pyrene-1-carbaldehyde, anthracene-9-carbaldehyde and 2-hydroxy-1-naphthaldehyde, respectively. The structures of the prepared fluorescent azomethine probes were confirmed using FTIR, 1H-NMR and 13C-NMR spectroscopies. The basis of the study is the use of the synthesized materials as fluorescent probes in the photophysical and fluorescence detection of some nitroaromatic explosives. Emission increases occurred due to aggregation caused by π-π stacking in synthesized azomethines. To measure the nitroaromatic detection capabilities of fluorescence probes, fluorescence titration experiments were performed using the photoluminescence spectroscopy. It was observed that compound A containing pyrene ring provided the best emission intensity-increasing effect due to aggregation with the lowest LOD value (14.96 μM) for the sensing of 4-nitrophenol. In compounds B and C, nitrobenzene with the lowest LOD (16.15 μM and 23.49 μM respectively) caused the most regular emission increase, followed by picric acid.
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The data that supports the findings of this study are available in the supplementary material of this article.
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All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by MB, AK and ÖÖ. Data interpretation was done by MB, AK, ÖÖ and MK. The first draft of the manuscript was written by MB, AK, ÖÖ and MK. All authors read and approved the final manuscript.
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Bal, M., Köse, A., Özpaça, Ö. et al. Pyrene, Anthracene, and Naphthalene-Based Azomethines for Fluorimetric Sensing of Nitroaromatic Compounds. J Fluoresc 33, 1443–1455 (2023). https://doi.org/10.1007/s10895-023-03155-w
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DOI: https://doi.org/10.1007/s10895-023-03155-w