Concentration-dependent color tunability of nitrogen-doped carbon dots and their application for iron(III) detection and multicolor bioimaging
文献类型：期刊论文
| 作者 | Wang, Chuanxi; Wu, Qian; Wang, Xioajie; Zhou, Jingdan; Wen, Zhuoqi; Hu, Tantan; Wang, Chan |
| 刊名 | JOURNAL OF COLLOID AND INTERFACE SCIENCE
 |
| 出版日期 | 2018 |
| 卷号 | 521页码:33-41 |
| 关键词 | Graphene Quantum Dots Turn-on Sensor Green Synthesis Living Cells Photoluminescence Properties Blue Luminescence Nanodots Emission Fluorescence Mechanism |
| 英文摘要 | Nitrogen doping can effectly adjust the compositions and structures of carbon dots and hence enhance their fluorescence. In this work, we report a fast and low-cost route for synthesis of nitrogen-doped carbon dots (N-CDs) by microwave pyrolysis of citric acid and ammonium within 7 min. The as-prepared N-CDs contain plentiful oxygen and nitrogen functional groups, and dispaly intense fluorescence with high quantum yield of ca. 44.3% and have an average size of 1.8 nm. The obtained N-CDs exhibit highly stable against photobleaching, ionic strengths, and can be used for selective and sensitive detection of Fe(III). It is postulated that the Fe3+-mediated fluorescence quenching is attributed to the charge transfer between N-CDs and Fe3+. In particular, the emission peaks from blue to red region can be tuned by interparticle distance of N-CDs, simply by increasing the concentration of N-CDs in aqueous solution, which indicates its potential applications as a promising optical image probe in multicolor cellular imaging. (C) 2018 Elsevier Inc. All rights reserved. |
| 学科主题 | Physics |
| 语种 | 英语 |
| 公开日期 | 2018-12-04 |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/17363]  |
| 专题 | 2018专题 |
| 推荐引用方式 GB/T 7714 | Wang, Chuanxi,Wu, Qian,Wang, Xioajie,et al. Concentration-dependent color tunability of nitrogen-doped carbon dots and their application for iron(III) detection and multicolor bioimaging[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2018,521:33-41. |
| APA | Wang, Chuanxi.,Wu, Qian.,Wang, Xioajie.,Zhou, Jingdan.,Wen, Zhuoqi.,...&Wang, Chan.(2018).Concentration-dependent color tunability of nitrogen-doped carbon dots and their application for iron(III) detection and multicolor bioimaging.JOURNAL OF COLLOID AND INTERFACE SCIENCE,521,33-41. |
| MLA | Wang, Chuanxi,et al."Concentration-dependent color tunability of nitrogen-doped carbon dots and their application for iron(III) detection and multicolor bioimaging".JOURNAL OF COLLOID AND INTERFACE SCIENCE 521(2018):33-41. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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