荧光
检出限
姜黄素
猝灭(荧光)
溶剂
量子产额
化学
线性范围
碳纤维
光化学
量子点
核化学
分析化学(期刊)
材料科学
色谱法
纳米技术
有机化学
生物化学
物理
量子力学
复合数
复合材料
作者
Mengyao He,Xiuming Jiang,Xinyu Wang,Guoqiang Xiang,Lijun He
标识
DOI:10.1016/j.microc.2024.109898
摘要
A highly selective fluorometric method was developed for the specific determination of curcumin (Cur) based on hydrophobic carbon dots (HB-CDs) derived from flaxseed oil by a solvent-free reaction. The as-prepared HB-CDs possessed blue fluorescence emission (at 425 nm) with a fluorescence quantum yield (QY) of 21.1 %. It was that the fluorescence of HB-CDs could be quantitatively quenched by Cur, and the fluorescence quenching mechanism was proved to be a combination of dynamic and static quenching. The detection limit of the method for Cur was 20 nM with a linear response range of 0.2–200 µM. Additionally, HB-CDs can be quickly recovered from the tested solutions through solvent change precipitation. The developed HB-CDs based fluorescent method has been successfully applied for real food samples analysis with satisfactory results.
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