Chemiluminescence of carbon dots under strong alkaline solutions: a novel insight into carbon dot optical properties.
Chemiluminescence of carbon dots under strong alkaline solutions: a novel insight into carbon dot optical properties.
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DOI：
10.1039/c3nr00358b
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发表时间：
2013-03
期刊：
影响因子：
6.7
通讯作者：
Lixia Zhao;F. Di;Dabin Wang;Liang-Hong Guo;Yu Yang;B. Wan;Hui Zhang
中科院分区：
文献类型：
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作者：
Lixia Zhao;F. Di;Dabin Wang;Liang-Hong Guo;Yu Yang;B. Wan;Hui Zhang
我们报道了在强碱性溶液(如NaOH或KOH)存在下，荧光碳点的惊人化学发光(CL)行为。在一定范围内，化学发光强度依赖于碱基和碳点的浓度。通过UV-Vis、荧光、化学发光、FTIR、XPS和EPR光谱研究了可能的化学发光机理。通过碳点与热激发产生的空穴的“化学还原”，提出了注入电子的辐射复合，这为研究碳点的特性提供了新的线索。
We report the surprising chemiluminescence (CL) behavior of fluorescent carbon dots in the presence of a strong alkaline solution, such as NaOH or KOH. The CL intensity was dependent on the concentration of the base and carbon dots in a certain range. A possible CL mechanism was studied by UV-Vis, fluorescence, CL, FTIR, XPS and EPR spectroscopy. Radiative recombination of the injected electrons by "chemical reduction" of carbon dots with thermally excited generated holes was proposed, which sheds new light on the characteristics of carbon dots.