Fluorescence "Turn OFF-ON" detection of Fe 3+ and propiconazole pesticide using blue emissive carbon dots from lemon peel

Fluorescence "Turn OFF-ON" detection of Fe 3+ and propiconazole pesticide using blue emissive carbon dots from lemon peel

In this study, water-soluble carbon dots (CDs) were employed as a novel fluorescence "turn OFF-ON" sensor to detect Fe ions in pharmaceutical sample and propiconazole (PC) in food samples. Blue fluorescent "LPCDs" are synthesized from the lemon peel that exhibited emission at 468...

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Bibliographic Details
Published in:Food chemistry Vol. 428; p. 136796
Main Authors: Vadia, Foziya Yusuf, Ghosh, Subhadeep, Mehta, Vaibhavkumar N, Jha, Sanjay, Malek, Naved I, Park, Tae Jung, Kailasa, Suresh Kumar
Format: Journal Article
Language:English
Published: England 06-07-2023
Subjects:
Propiconazole
Analytical method
Fluorescence turn OFF-ON mechanism
Carbon dots
Fe(3+)
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Summary:In this study, water-soluble carbon dots (CDs) were employed as a novel fluorescence "turn OFF-ON" sensor to detect Fe ions in pharmaceutical sample and propiconazole (PC) in food samples. Blue fluorescent "LPCDs" are synthesized from the lemon peel that exhibited emission at 468 nm when excited at 378 nm. The average size of the as-prepared LPCDs is 2.03 nm, displaying a quantum yield of 32 %. Fluorescence "turn OFF-ON" strategy was developed for sensing of Fe ion and PC, demonstrating favorable linearity in the range of 0.5-180 μM and 0.1-40 μM with the detection limits of 0.18 μM and 0.054 μM for Fe and PC, respectively. Further, LPCDs-loaded cellulose paper was used as visual reader to detect Fe and PC. This approach was effectively applied to detect Fe and PC in pharmaceutical and vegetable samples.
ISSN:1873-7072