Issue 17, 2011
From the journal:

Journal of Materials Chemistry

Lanthanide activator doped NaYb1−xGdxF4nanocrystals with tunable down-, up-conversion luminescence and paramagnetic properties

Daqin Chen,a   Yunlong Yu,a   Feng Huang,a   Anping Yanga  and  Yuansheng Wang*ab  

* Corresponding authors

a State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, China
E-mail: yswang@fjirsm.ac.cn
Fax: +86-591-83705402
Tel: 86-591-83705402

b State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-sen Unversity, Guangzhou, China

Abstract

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−xGdxF4nanocrystals were closely related to the Gd3+ content. Particularly, when the Gd3+ content reached 60 mol%, the final products were highly uniform and monodisperse hexagonal NaYb0.4Gd0.6F4nanorods. By doping appropriate lanthanide activators, these nanorods exhibited efficient dual-sensitizing multicolor emissions, i.e., Gd3+ sensitizing down-conversion by an ultraviolet light excitation orYb3+ sensitizing up-conversion by a near-infrared one. The lanthanide activator doped NaYb0.4Gd0.6F4nanorods with tunable up-conversion luminescence and proper paramagnetism originating from Gd3+ ions may find potential applications in bio-probes and magnetic resonance imaging.

Graphical abstract: Lanthanide activator doped NaYb1−xGdxF4nanocrystals with tunable down-, up-conversion luminescence and paramagnetic properties

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Article information

DOI
https://doi.org/10.1039/C1JM10266D
Article type
Paper
Submitted
18 Jan 2011
Accepted
23 Feb 2011
First published
18 Mar 2011

J. Mater. Chem., 2011,21, 6186-6192

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Lanthanide activator doped NaYb1−xGdxF4nanocrystals with tunable down-, up-conversion luminescence and paramagnetic properties

D. Chen, Y. Yu, F. Huang, A. Yang and Y. Wang, J. Mater. Chem., 2011, 21, 6186 DOI: 10.1039/C1JM10266D

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