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学科主题: 临床医学
题名:
Investigation on the structure and upconversion fluorescence of Yb3+/Ho3+ co-doped fluorapatite crystals for potential biomedical applications
作者: Li, Xiyu1; Zhu, Jingxian2; Man, Zhentao2; Ao, Yingfang2; Chen, Haifeng1
刊名: SCIENTIFIC REPORTS
发表日期: 2014-03-24
DOI: 10.1038/srep04446
卷: 4
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Multidisciplinary Sciences
研究领域[WOS]: Science & Technology - Other Topics
关键词[WOS]: IN-VIVO ; NANOPARTICLES ; HYDROXYAPATITE ; NANOPHOSPHORS ; NANOCRYSTALS ; LUMINESCENT ; EMISSION ; TRACKING ; STRATEGY ; CELLS
英文摘要:

Rare-earth Yb3+ and Ho3+ co-doped fluorapatite (FA: Yb3+/Ho3+) crystals were prepared by hydrothermal synthesis, and their structure, upconversion properties, cell proliferation and imaging were investigated. The synthesized crystals, with a size of 16 by 286 nm, have a hexagonal crystal structure of classic FA and a Ca/Yb/Ho molar ratio of 100/16/2.1. Several reasonable Yb3+/Ho3+ -embedding lattice models along the fluorine channel of the FA crystal cell are proposed for the first time, such as models for (Ca7YbHo(C))(PO4)(6)F-2 and (Ca6YbHoNa2)(PO4)(6)F-2. The activated FA: Yb3+/Ho3+ crystals were found to exhibit distinct upconversion fluorescence. The 543-and 654-nm signals in the emission spectra could be assigned, respectively, to the 5F4 (5S2) -5I8 and 5F5 -5I8 transitions of holmium via 980-nm near-infrared excitation and the energy transfer of ytterbium. After the surfaces were grafted with hydrophilic dextran, the crystals displayed clear fluorescent cell imaging. Thus, the prepared novel FA: Yb3+/Ho3+ upconversion fluorescent crystals have potential applications in the biomedical field.

语种: 英语
所属项目编号: 2012CB933903
项目资助者: National Basic Research Program of China
WOS记录号: WOS:000333239000006
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/63229
Appears in Collections:北京大学第三临床医学院_运动医学研究所_期刊论文

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作者单位: 1.Peking Univ, Dept Biomed Engn, Coll Engn, Beijing 100871, Peoples R China
2.Peking Univ, Inst Sports Med, Hosp 3, Beijing 100191, Peoples R China

Recommended Citation:
Li, Xiyu,Zhu, Jingxian,Man, Zhentao,et al. Investigation on the structure and upconversion fluorescence of Yb3+/Ho3+ co-doped fluorapatite crystals for potential biomedical applications[J]. SCIENTIFIC REPORTS,2014,4.
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