Color-switchable, emission-enhanced fluorescence realized by engineering C-dot@C-dot nanoparticles
文献类型：期刊论文
| 作者 | Zhou L. ; Zhang W.; Zhang W.; Wang H.; Wang H.; Zhang T.; Wang H.; Wang H.
|
| 刊名 | ACS Applied Materials and Interfaces
 |
| 出版日期 | 2014 |
| 卷号 | 6期号:23页码:20700-20708 |
| ISSN号 | ISBN/19448244 |
| 英文摘要 | This paper reports the preparation and properties of color-switchable fluorescent carbon nanodots (C-dots). C-dots that emit dark turquoise and green-yellow fluorescence under 365 nm UV illumination were obtained from the hydrothermal decomposition of citric acid. Dark green fluorescent C-dots were obtained by conjugating prepared C-dots to form C-dot@C-dot nanoparticles. After successful conjugation of the C-dots, the fluorescence emission undergoes a blue-shift of nearly 20 nm (0.15 eV) under UV excitation at 370 nm. The C-dots emit goldenrod, green-yellow, and gold light under excitation at 455 nm, which shows that the prepared C-dots are color-switchable. Furthermore, conjugation of the C-dots results in enhanced, red-shifted absorption of the - transition of the aromatic sp2 domains due to the conjugated -electron system. N incorporation in the carbon structure leads to a degree of dipoles for all the aromatic sp2 bonds. The enhanced absorption in a wide range from 226 to 601 nm indicates extended conjugation in the C-dot@C-dot structure. The time-resolved average lifetimes for the three different types of C-dots prepared in this study are 7.10, 7.65, and 4.07 ns. The radiative rate (reduced decay lifetime) increases when the C-dots are conjugated in the C-dot@C-dot nanoparticles, leading to the enhanced fluorescence emission. The fluorescence emission of the C-dot@C-dot nanoparticles can be used in applications such as flow cytometry and cell imaging. |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| 源URL | [http://ir.ciomp.ac.cn/handle/181722/43792]  |
| 专题 | 长春光学精密机械与物理研究所_中科院长春光机所知识产出 |
| 推荐引用方式 GB/T 7714 | Zhou L.,Zhang W.,Zhang W.,et al. Color-switchable, emission-enhanced fluorescence realized by engineering C-dot@C-dot nanoparticles[J]. ACS Applied Materials and Interfaces,2014,6(23):20700-20708. |
| APA | Zhou L..,Zhang W..,Zhang W..,Wang H..,Wang H..,...&Wang H..(2014).Color-switchable, emission-enhanced fluorescence realized by engineering C-dot@C-dot nanoparticles.ACS Applied Materials and Interfaces,6(23),20700-20708. |
| MLA | Zhou L.,et al."Color-switchable, emission-enhanced fluorescence realized by engineering C-dot@C-dot nanoparticles".ACS Applied Materials and Interfaces 6.23(2014):20700-20708. |
入库方式： OAI收割
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。