Synthesis of biocompatible uniform NaYF4:Yb3+,Er3+ nanocrystals and their characteristic photoluminescence
文献类型：期刊论文
| 作者 | Liu, Yunxin1,2; Zhan, Shiping2; Yang, Qibin1; Yan, Mingli3 |
| 刊名 | JOURNAL OF LUMINESCENCE
 |
| 出版日期 | 2012-11-01 |
| 卷号 | 132页码:3042-3047 |
| 关键词 | Rare Earth Doped Upconversion Photoluminescence Biocompatible Nanocrystals |
| ISSN号 | 0022-2313 |
| DOI | 10.1016/j.jlumin.2012.06.026 |
| 文献子类 | Article |
| 英文摘要 | For biological application, lanthanide ion doped upconverting nanocrystals should be modified to be biocompatible. Here, we show a viable and efficient procedure for producing biocompatible NaYF4:Yb3+,Er3+ upconverting nanocrystals. The uniform NaYF4:Yb,Er upconverting nanocrystals were firstly synthesized by a mild chemical procedure, which were subsequently coated with a layer of polyethylene-glycol (PEG) to be biocompatible. The photoluminescent intensity of the PEG coated NaYF4:Yb,Er nanocrystals varies nonlinearly with increasing the thickness of the PEG coating. In particular, it was noted that the Intensity Ratio of Red to Green Emission (IRRGE) of PEG coated NaYF4:Yb,Er was highly depended on the excitation power density: IRRGE keeping almost constant with increasing the excitation power density below 826 W/cm(2), but remarkably increasing when increasing the excitation power density above 826 W/cm(2). For this unique phenomenon, the excitation and emission mechanisms related to PEG coating were discussed. (C) 2012 Elsevier B.V. All rights reserved. |
| WOS关键词 | UP-CONVERSION LUMINESCENCE ; NEAR-INFRARED EMISSION ; IN-VIVO ; LANTHANIDE ; NANOPARTICLES ; FLUORESCENCE ; NANOPHOSPHORS ; NAYF4-YB,ER ; PHOSPHORS ; CARRIERS |
| 语种 | 英语 |
| WOS记录号 | WOS:000308627400035 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://119.78.100.186/handle/113462/48667]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Yang, Qibin |
| 作者单位 | 1.Xiangtan Univ, Inst Modern Phys, Xiangtan 411105, Peoples R China 2.Hunan Univ Sci & Technol, Dept Phys, Xiangtan 411201, Peoples R China 3.Hunan Univ Sci & Technol, Sch Life Sci, Xiangtan 411105, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Yunxin,Zhan, Shiping,Yang, Qibin,et al. Synthesis of biocompatible uniform NaYF4:Yb3+,Er3+ nanocrystals and their characteristic photoluminescence[J]. JOURNAL OF LUMINESCENCE,2012,132:3042-3047. |
| APA | Liu, Yunxin,Zhan, Shiping,Yang, Qibin,&Yan, Mingli.(2012).Synthesis of biocompatible uniform NaYF4:Yb3+,Er3+ nanocrystals and their characteristic photoluminescence.JOURNAL OF LUMINESCENCE,132,3042-3047. |
| MLA | Liu, Yunxin,et al."Synthesis of biocompatible uniform NaYF4:Yb3+,Er3+ nanocrystals and their characteristic photoluminescence".JOURNAL OF LUMINESCENCE 132(2012):3042-3047. |
入库方式： OAI收割
来源：近代物理研究所
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