Research on the spectral properties of luminescent carbon dots

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• 作者：Li-ping Lin^a ; Xin-Xing Wang^a ; Shao-Qin Lin^b ; Li-Hong Zhang^c ; Chang-Qing Lin^c ; Zhi-Ming Li^c ; Jia-Ming Liu^a ; ^{zzsyliujiaming@163.com}
• 关键词：Carbon dots ; Synthesis ; Characterization ; Spectral properties ; Analytical application
• 刊名：Spectrochimica Acta Part A ; Molecular and Biomolecular Spectroscopy
• 出版年：2012
• 期刊代码：99_13861425
• 类别：ch
• 出版时间：September, 2012
• 卷：95
• 期：Complete
• 页码：555-561
• 文件大小：1399 K

摘要

This paper is trying to research the developing status of carbon dots (CDs), and the results show that the simple, rapid and high yield synthetic methods for CDs and the application of CDs in biological science and analysis field will certainly become an inevitable development trend in the future. The CDs obtained by microwave possess excellent optical properties including UV-Vis absorption, fluorescence and room temperature phosphorescence. Under the conditions of 30 掳C and 10 min, the fluorescence signal (F) of CDs not only could be enhanced by hexadecyltrimethylammonium bromide (CTAB), Triton X-100, Na₂S, Na₂C₂O₄ and NH₃.H₂O, but also could be quenched by sodium dodecyl sulfate, KBrO₃, K₂S₂O₈, NaIO₄, ascorbic acid, NaBH₄, HNO₃, HCl, H₂SO₄, CH₃COOH and most metal ions, with the blue or red shifting in varying degrees, indicating the potential values of CDs in analytical application. Besides, the sensitive response of F to pH showed the promise of developing a new pH sensor with CDs.