AbstractThe authors report that carbon nitride quantum dots (CN QDs) exert a strong enhancing effect on the Cu(II)/H2O2 chemiluminescent system. Chemiluminescence (CL) intensity is enhanced by CN QDs by a factor of ~75, while other carbon nanomaterials have a much weaker effect. The possible mechanism of the effect was evaluated by recording fluorescence and CL spectra and by examining the effect of various radical scavengers. Emitting species was found to be excited-state CN QDs that produce green CL peaking at 515 nm. The new CL system was applied to the sensitive detection of H2O2 and glucose (via glucose oxidase-catalyzed formation of H2O2) with detection limits (3σ) of 10 nM for H2O2 and 100 nM for glucose. The probe was employed for glucose determination in human plasma samples with satisfactory results. Graphical abstractThe effect of carbon nitride quantum dots (CN QDs) on Cu(II)-H2O2 chemiluminescence reaction was studied and the new CL system was applied for sensitive detection of glucose based on the glucose oxidase (GOx)-catalyzed formation of H2O2.

中文翻译：

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添加氮化碳量子点对Cu(II)-H2O2体系化学发光的强增强及其在检测H2O2和葡萄糖中的应用

摘要 作者报道氮化碳量子点 (CN QDs) 对 Cu(II)/H2O2 化学发光体系具有很强的增强作用。CN QD 将化学发光 (CL) 强度提高了约 75 倍，而其他碳纳米材料的效果要弱得多。通过记录荧光和 CL 光谱以及检查各种自由基清除剂的作用来评估这种作用的可能机制。发现发射物质是激发态 CN QD，在 515 nm 处产生绿色 CL 峰。新的 CL 系统用于灵敏检测 H2O2 和葡萄糖（通过葡萄糖氧化酶催化形成 H2O2），检测限 (3σ) 为 H2O2 为 10 nM，葡萄糖为 100 nM。该探针用于人血浆样品中的葡萄糖测定，结果令人满意。