Off-on fluorescent switching of boron-doped carbon quantum dots for ultrasensitive sensing of catechol and glutathione
文献类型：期刊论文
| 作者 | Ma, Y; Chen, AY; Huang, YY; He, X; Xie, XF; He, B; Yang, JH; Wang, XY |
| 刊名 | CARBON
 |
| 出版日期 | 2020-06-01 |
| 页码 | 234 |
| ISSN号 | 0008-6223 |
| DOI | 10.1016/j.carbon.2020.02.048 |
| 文献子类 | Article |
| 英文摘要 | A signal-off-on probe of B-doped carbon quantum dot (B-CQD) is developed for ultrasensitive detection of catechol (CC) by fluorescence quenching and glutathione (GSH) by fluorescence recovering without any auxiliary of biomolecules or labeled materials. In this sensing system, the B-CQDs with a high quantum yield of 42% are prepared via a facile hydrothermal method with precursors of citric acid as C source and sodium tetraphenylborate as B source. The microstructure and fluorescence stability of the B-CQDs are investigated. Under the optimum conditions, the B-CQDs are highly sensitive for detecting CC with a linear range of 1-50 nM and a detection limit of 0.25 nM under a typical signal-to-noise ratio of 3 to 1 (S/N = 3), and for sensing GSH with a linear range of 2-100 nM and a detection limit of 0.5 nM (S/N = 3). Meanwhile, the developed B-CQDs show a good selectivity for sensing CC and GSH under high concentrations of interfering substances, such as biological thiols and amino acids. The B-CQDs are successfully applied to determination of CC in river water and GSH in human serum, where the recoveries are 103.3%-106.0% and 99.8%-106.3% for CC and GSH sensing, respectively. The signal-off-on mechanisms of the B-CQDs sensor are discussed. (c) 2020 Elsevier Ltd. All rights reserved. |
| WOS关键词 | HIGHLY SELECTIVE DETECTION ; ONE-STEP SYNTHESIS ; SENSITIVE DETECTION ; LIQUID-CHROMATOGRAPHY ; FLUOROMETRIC SENSOR ; GOLD NANOPARTICLES ; AMINO-ACIDS ; PROBE ; HYDROQUINONE ; CYS |
| WOS研究方向 | Chemistry ; Materials Science |
| 语种 | 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://ir.sic.ac.cn/handle/331005/28032]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 推荐引用方式 GB/T 7714 | Ma, Y,Chen, AY,Huang, YY,et al. Off-on fluorescent switching of boron-doped carbon quantum dots for ultrasensitive sensing of catechol and glutathione[J]. CARBON,2020:234. |
| APA | Ma, Y.,Chen, AY.,Huang, YY.,He, X.,Xie, XF.,...&Wang, XY.(2020).Off-on fluorescent switching of boron-doped carbon quantum dots for ultrasensitive sensing of catechol and glutathione.CARBON,234. |
| MLA | Ma, Y,et al."Off-on fluorescent switching of boron-doped carbon quantum dots for ultrasensitive sensing of catechol and glutathione".CARBON (2020):234. |
入库方式： OAI收割
来源：上海硅酸盐研究所
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