Citation: Guo-Wei LI, Yong-Sheng LIU, Fei-Long JIANG, Mao-Chun HONG. Ultrasmall Lanthanide-doped NaMgF₃ Nanocrystals: Controlled Synthesis and Optical Properties[J]. Chinese Journal of Structural Chemistry, ;2020, 39(11): 2001-2008. doi: 10.14102/j.cnki.0254–5861.2011–2734 shu

Ultrasmall Lanthanide-doped NaMgF₃ Nanocrystals: Controlled Synthesis and Optical Properties

Guo-Wei LI ^{a, b} ,
Yong-Sheng LIU ^{b, c,,} ,
Fei-Long JIANG ^b,, ,
Mao-Chun HONG ^{b, c}

a.
Fujian Normal University, Fuzhou 350007, China
b.
State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
c.
University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author: Yong-Sheng LIU, liuysh@fjirsm.ac.cn Fei-Long JIANG, fjiang@fjirsm.ac.cn
Received Date: 13 January 2020
Accepted Date: 3 March 2020

Fund Project: the Strategic Priority Research Program of Chinese Academy of Sciences XDB20000000the National Natural Science Foundation of China 21871256the National Natural Science Foundation of China 21731006the Key Research Program of Frontier Science CAS QYZDY-SSW-SLH025

Figures(5)

Orthorhombic-phase NaMgF₃, composed of bio-friendly elements of Na, Mg and F, is considered to be an ideal host matrix for preparing trivalent lanthanide (Ln³⁺)-doped luminescent nanocrystals (NCs) with color-tunable emissions for diverse biological applications. However, the preparation and the survey on optical properties of ultrasmall (< 10 nm) Ln³⁺-doped NaMgF₃ NCs remain nearly untouched to date. In this paper, we report a series of monodisperse Ln³⁺-doped orthorhombic-phase NaMgF₃ NCs with an average size of ~10 nm that was synthesised by using a modified high-temperature co-precipitation method. Utilizing Eu³⁺ ion as an efficient optical/structural probe, the successful hetero-valence doping of Ln³⁺ ion into the lattice of NaMgF₃ NCs is well-established irrespective of their different valences and radii between the host cation (e.g. Mg²⁺) and Ln³⁺ dopant. Benefiting from this, desirable upconversion luminescence (UCL) ranging from ultraviolet (UV) to visible and to near-infrared (NIR) spectral regions can be easily obtained after the doping of typical UCL couples of Yb³⁺/Er³⁺, Yb³⁺/Tm³⁺ and Yb³⁺/Ho³⁺ into the NaMgF₃ NCs upon excitation by using a 980-nm diode laser.
- NaMgF₃,
- nanocrystals,
- lanthanide ion,
- upconversion luminescence,
- ultrasmall
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Ultrasmall Lanthanide-doped NaMgF3 Nanocrystals: Controlled Synthesis and Optical Properties

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Ultrasmall Lanthanide-doped NaMgF₃ Nanocrystals: Controlled Synthesis and Optical Properties