期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 18, 期 43, 页码 13702-13711出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201201277
关键词
doping; luminescence; nanowires; rare earths; solid solutions
资金
- NSFC [91127040, 20921001]
- State Key Project of Fundamental Research for Nanoscience and Nanotechnology [2011CB932402]
- China Postdoctoral Science Foundation [2011M500283]
- Scientific Research Program of Shaanxi Provincial Department of Education [09JK753]
- Shaanxi Provincial Scientific Technology Research and Development Program [2012JM2014]
It was found that calcium carbonate (CaCO3) and hydroxyapatite (Ca10(OH)2(PO4)6), which are two crucial constituents of the most abundant minerals in nature and very important bioinorganic components in the tissues of mineralizing organisms, can form solid solutions in a wide range of PO43-/CO32- (P/C) ratios at low temperature when prepared as ultrathin nanowire structures. This is due to the special reactivity of ultrasmall nanocrystals, which can effectively lower the synthetic temperature and promote the formation of solid solutions. The as-prepared ultrathin nanowires with suitable P/C ratios presented strong blue luminescence due to the existence of abundant defects strengthened by CO32-. If used as the matrix, the as-prepared ultrathin nanowires demonstrated bright green or red luminescent properties when doped with Tb3+ or Eu3+ ions, and simultaneously retained their original morphologies. These three kinds of fluorescent nanowires could reproduce a full range of luminescence colors based on additive color mixtures of the three primary colors (red, green, and blue). In addition, under the same reaction system, ultrafine rare-earth-doped (Ce3+, Tb3+, Eu3+) nanowires (about 1 nm in diameter) were synthesized by using a one-step hydrothermal process, which further pushed the size of the Ca-PO4-CO3 nanobuilding blocks to one unit cell region. These ultrafine nanowires displayed excellent film-forming properties and the ability to absorb UV radiation.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据