ArticleJournal of fluorescence2026
A Pyrazoline-Based Fluorescent Sensor for Picric Acid Detection in Aqueous Media: Experimental and DFT Insights.
Article in Journal of fluorescence, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The present research work describes the development of a pyrazoline-based fluorescence sensor 3-[(5R)-5-(1-benzothiophen-3 - yl)-1-phenyl-4,5-dihydro-1H-pyrazol-3 - yl] phenol (BTP) for reliable identification of picric acid (PA) in aqueous environments. The sensor's efficiency was evaluated based on its linear range (0 to 10 µM) and detection limit (0.991 µM), which demonstrate a greater sensitivity across various matrices, including river, tap, and bottled water. BTP exhibited a higher quenching efficiency of 75.12% for picric acid (PA) as compared to other nitroaromatics. DFT studies provided the theoretical information of the BTP-PA complex. The investigation of the FMOs and quenching efficiency indicates that the BTP-PA interaction occurs upon an electron transfer mechanism.
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