Department of Chemistry, Sardar Vallabhbhai National Institute of Technology, Surat 395007, Gujarat, India.
Department of Chemistry, Research Institute of Chem-Bio Diagnostic Technology, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul 06974, Republic of Korea.
Food Chem. 2023 Dec 1;428:136796. doi: 10.1016/j.foodchem.2023.136796. Epub 2023 Jul 6.
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.
在这项研究中，水溶性碳点（CDs）被用作一种新型荧光“关闭-开启”传感器，用于检测药物样品中的 Fe 离子和食品样品中的丙环唑（PC）。蓝色荧光“LPCDs”是从柠檬皮中合成的，在 378nm 激发时发出 468nm 的发射。所制备的 LPCDs 的平均尺寸为 2.03nm，量子产率为 32%。开发了荧光“关闭-开启”策略来检测 Fe 离子和 PC，对于 Fe 和 PC 的检测范围分别在 0.5-180μM 和 0.1-40μM 范围内具有良好的线性关系，检测限分别为 0.18μM 和 0.054μM。此外，负载 LPCDs 的纤维素纸被用作视觉读取器来检测 Fe 和 PC。该方法有效地用于检测药物和蔬菜样品中的 Fe 和 PC。
