Lanthanide activator doped NaYb1-xGdxF4 nanocrystals with tunable down-, up-conversion luminescence and paramagnetic properties

被引：74

作者：

Chen, Daqin ^{[1
]}

Yu, Yunlong ^{[1
]}

Huang, Feng ^{[1
]}

Yang, Anping ^{[1
]}

Wang, Yuansheng ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Fujian Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Peoples R China

[2] Sun Yat Sen Univ, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2011年 / 21卷 / 17期

基金：

中国国家自然科学基金;

关键词：

HYDROTHERMAL SYNTHESIS; NAYF4; NANOCRYSTALS; CONTROLLABLE SYNTHESIS; HIGHLY UNIFORM; PHASE; SIZE; FLUORESCENCE; FACILE; TM3+; TB;

D O I：

10.1039/c1jm10266d

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Novel NaYb1-xGdxF4 (0 <= x <= 1) nanocrystals were synthesized by a modified liquid-solid-solution solvothermal route for the first time. X-ray diffraction analyses and transmission electron microscope observations evidenced that the phase, size and shape of NaYb1-xGdxF4 nanocrystals were closely related to the Gd3+ content. Particularly, when the Gd3+ content reached 60 mol%, the final products were highly uniform and monodisperse hexagonal NaYb0.4Gd0.6F4 nanorods. By doping appropriate lanthanide activators, these nanorods exhibited efficient dual-sensitizing multicolor emissions, i.e., Gd3+ sensitizing down-conversion by an ultraviolet light excitation or Yb3+ sensitizing up-conversion by a near-infrared one. The lanthanide activator doped NaYb0.4Gd0.6F4 nanorods with tunable up-conversion luminescence and proper paramagnetism originating from Gd3+ ions may find potential applications in bio-probes and magnetic resonance imaging.

引用

页码：6186 / 6192

页数：7

共 52 条

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