Upconversion luminescence and magnetic properties of ligand-free monodisperse lanthanide doped BaGdF5 nanocrystals
文献类型：期刊论文
| 作者 | Xu, Changfu1,2; Ma, Mo1,2; Yang, Liwen1,3; Zeng, Songjun1,2; Yang, Qibin1,2 |
| 刊名 | JOURNAL OF LUMINESCENCE
 |
| 出版日期 | 2011-12-01 |
| 卷号 | 131页码:2544-2549 |
| 关键词 | BaGdF5 Bifunctional nanocrystal Paramagnetism Upconversion Hydrophilic Ligand-free |
| ISSN号 | 0022-2313 |
| DOI | 10.1016/j.jlumin.2011.06.022 |
| 英文摘要 | Lanthanide (Ln=Yb-3+,Yb- Er3+ and Tm3+) doped monodisperse oleate-capped BaGdF5 nanocrystals with a mean diameter of approximately 18 nm were prepared via liquid-solid-solution method. The cell parameter of the as-prepared cubic BaGdF5 nanocrystals is 5.884 angstrom, which is different from the reported 6.023 angstrom (JCPDS 24-0098). When excited by a 980 nm laser, these Ln(3+) doped nanocrystals exhibit multi-color up-conversion (UC) emissions including blue, yellow and white, by precisely adjusting the dopant concentration of Yb3+, Er3+ and Trn(3+). The oleate ligands capped on the surface of the as-synthesized products, which can be conversed from hydrophobic to hydrophilic along with certain extent of weakening of UC intensity, can be moved by the acid treatment process. The measured field dependence of magnetization (M-H curves) of the BaGdF5 nanocrystals shows excellent paramagnetism. At room temperature, the magnetization of BaGd0.798Th02Tm0.002F5 nanocrystals is 0.9165 emu/g and the magnetic mass susceptibility reaches 6.11 x 10(-5) emu g(-1) Oe(-1) at 15 kOe. Our results indicate that these bi-functional hydrophilic Ln(3+) doped BaGdF5 nanocrystals have potential applications in color displays, bioseparation and optical-magnetic dual modal nanoprobes in biomedical imaging. (C) 2011 Elsevier B.V. All rights reserved. |
| WOS关键词 | NEAR-INFRARED EMISSION ; NAYF4 NANOCRYSTALS ; NANOPARTICLES ; SOLIDS ; PHASE ; IONS ; ER3+ ; SIZE |
| 资助项目 | National Natural Science Foundation of China[10802071] ; Key Scientific and Technical Innovation[708068] ; Ministry of Education of China ; Hunan colleges and universities[091K033] |
| WOS研究方向 | Optics |
| 语种 | 英语 |
| WOS记录号 | WOS:000294877500019 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | National Natural Science Foundation of China ; Key Scientific and Technical Innovation ; Ministry of Education of China ; Hunan colleges and universities |
| 源URL | [http://119.78.100.186/handle/113462/34886]  |
| 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, Fac Mat & Photoelect Phys, Xiangtan 411105, Peoples R China 2.Xiangtan Univ, Minist Educ, Key Lab Low Dimens Mat & Applicat Technol, Xiangtan 411105, Peoples R China 3.Xiangtan Univ, Lab Quantum Engn & Micronano Energy Technol, Xiangtan 411105, Hunan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Changfu,Ma, Mo,Yang, Liwen,et al. Upconversion luminescence and magnetic properties of ligand-free monodisperse lanthanide doped BaGdF5 nanocrystals[J]. JOURNAL OF LUMINESCENCE,2011,131:2544-2549. |
| APA | Xu, Changfu,Ma, Mo,Yang, Liwen,Zeng, Songjun,&Yang, Qibin.(2011).Upconversion luminescence and magnetic properties of ligand-free monodisperse lanthanide doped BaGdF5 nanocrystals.JOURNAL OF LUMINESCENCE,131,2544-2549. |
| MLA | Xu, Changfu,et al."Upconversion luminescence and magnetic properties of ligand-free monodisperse lanthanide doped BaGdF5 nanocrystals".JOURNAL OF LUMINESCENCE 131(2011):2544-2549. |
入库方式： OAI收割
来源：近代物理研究所
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