Highly fluorescent carbon dots (CDs) have been prepared from natural spinach by a hydrothermal method. In this work, we have demonstrated that the CDs have a high quantum yield of 53 %, and exhibit special responses to 2-nitrophenol (2NP) and 4-nitrophenol (4-NP). Solutions of the CDs showed clear fluorescence quenching in the presence of 2-NP and 4-NP; the detection limits of 2-NP and 4-NP were 1.06 and 0.50 μM,

中文翻译：

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菠菜和多用途应用中高荧光碳点的一锅法合成

已经通过水热法从天然菠菜中制备了高荧光碳点 (CD)。在这项工作中，我们证明了 CD 具有 53% 的高量子产率，并且对 2-硝基苯酚 (2NP) 和 4-硝基苯酚 (4-NP) 表现出特殊的响应。CD 溶液在 2-NP 和 4-NP 存在下显示出明显的荧光猝灭；2-NP 和 4-NP 的检测限分别为 1.06 和 0.50 μM，