Carbon quantum dots (CQDs) with an average size of 4.7 nm and with uniform surface functionalization of sp² clusters were prepared by a hydrothermal method using the D. glomerata extract as precursor. The prepared CQDs exhibit antioxidant properties and can effectively reduce free radicals like superoxide O₂⋅⁻ or oxidants like KMnO₄. CQDs show also higher Cu²⁺ chelating activity than the starting extract or carnosine,

中文翻译：

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具有抗氧化和 Cu2+ 螯合特性的来自红竹荚的光致发光碳量子点

以球花石斛提取物为前驱体，通过水热法制备了平均尺寸为 4.7 nm 且具有均匀 sp ²簇表面功能化的碳量子点（CQD） 。制备的CQD具有抗氧化性能，可以有效减少超氧化物O ₂ ⋅ ^{-等自由基或KMnO} ₄等氧化剂。 CQD 还表现出比起始提取物或肌肽更高的 Cu ^{2+螯合活性，}