Green and Near-Infrared Dual-Mode Afterglow of Carbon Dots and Their Applications for Confidential Information Readout
文献类型：期刊论文
| 作者 | Wang, Yuci; Jiang, Kai; Du, Jiaren; Zheng, Licheng; Li, Yike; Li, Zhongjun; Lin, Hengwei |
| 刊名 | NANO-MICRO LETTERS
 |
| 出版日期 | 2021 |
| 卷号 | 13期号:1 |
| 关键词 | ACTIVATED DELAYED FLUORESCENCE ROOM-TEMPERATURE PHOSPHORESCENCE CYANURIC ACID QUANTUM DOTS LUMINESCENCE DESIGN WATER PERSISTENT MECHANISM EMISSION |
| 英文摘要 | Near-infrared (NIR), particularly NIR-containing dual-/multi-mode afterglow, is very attractive in many fields of application, but it is still a great challenge to achieve such property of materials. Herein, we report a facile method to prepare green and NIR dual-mode afterglow of carbon dots (CDs) through in situ embedding o-CDs (being prepared from o-phenylenediamine) into cyanuric acid (CA) matrix (named o-CDs@CA). Further studies reveal that the green and NIR afterglows of o-CDs@CA originate from thermal activated delayed fluorescence (TADF) and room temperature phosphorescence (RTP) of o-CDs, respectively. In addition, the formation of covalent bonds between o-CDs and CA, and the presence of multiple fixation and rigid effects to the triplet states of o-CDs are confirmed to be critical for activating the observed dual-mode afterglow. Due to the shorter lifetime and insensitiveness to human vision of the NIR RTP of o-CDs@CA, it is completely covered by the green TADF during directly observing. The NIR RTP signal, however, can be readily captured if an optical filter (cut-off wavelength of 600 nm) being used. By utilizing these unique features, the applications of o-CDs@CA in anti-counterfeiting and information encryption have been demonstrated with great confidentiality. Finally, the as-developed method was confirmed to be applicable to many other kinds of CDs for achieving or enhancing their afterglow performances. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/21288]  |
| 专题 | 2021专题_期刊论文 |
| 作者单位 | 1.Li, YK (corresponding author), Zhengzhou Univ, Coll Chem, Zhengzhou 450001, Peoples R China. 2.Jiang, K 3.Lin, HW (corresponding author), Jiangnan Univ, Int Joint Res Ctr Photorespons Mol & Mat, Sch Chem & Mat Engn, Wuxi 214122, Jiangsu, Peoples R China. 4.Jiang, K (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn NIMTE, Key Lab Graphene Technol & Applicat Zhejiang Prov, Ningbo 315201, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Wang, Yuci,Jiang, Kai,Du, Jiaren,et al. Green and Near-Infrared Dual-Mode Afterglow of Carbon Dots and Their Applications for Confidential Information Readout[J]. NANO-MICRO LETTERS,2021,13(1). |
| APA | Wang, Yuci.,Jiang, Kai.,Du, Jiaren.,Zheng, Licheng.,Li, Yike.,...&Lin, Hengwei.(2021).Green and Near-Infrared Dual-Mode Afterglow of Carbon Dots and Their Applications for Confidential Information Readout.NANO-MICRO LETTERS,13(1). |
| MLA | Wang, Yuci,et al."Green and Near-Infrared Dual-Mode Afterglow of Carbon Dots and Their Applications for Confidential Information Readout".NANO-MICRO LETTERS 13.1(2021). |
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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