Luminescence property and magnetic resonance imaging of Gd2O3:Tb3+ nanocrystals doped with Zn2+, Li

Gd 2 O 3 :Tb 3+ nanocrystal co-doped with Zn 2+ and Li + was prepared by the combination of polyol and solid-phase methods. The synthesized nanoparticles were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), photol...

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Bibliographic Details
Published in:Rare metals 2021-08, Vol.40 (8), p.2049-2058
Main Authors: Fu, Rong, Hu, Yan-Yan, Qiao, Hui-Na, Yang, Chun-Lin, Yin, Hao, Ou, Mei-Gui
Format: Article
Language:English
Subjects:
Biomaterials
Chemistry and Materials Science
Doping
Electron microscopy
Energy
Field emission microscopy
Fluorescence
Gadolinium oxides
Magnetic properties
Magnetic resonance imaging
Materials Engineering
Materials Science
Metallic Materials
Microscopy
Nanocrystals
Nanoparticles
Nanoscale Science and Technology
Original Article
Photoluminescence
Physical Chemistry
Relaxation time
Solid phases
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Summary:Gd 2 O 3 :Tb 3+ nanocrystal co-doped with Zn 2+ and Li + was prepared by the combination of polyol and solid-phase methods. The synthesized nanoparticles were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), photoluminescence (PL) spectra and magnetic resonance imaging (MRI). The results revealed that both Gd 2 O 3 :Tb 3+ /Zn 2+ and Gd 2 O 3 :Tb 3+ /Li + had cubic unit structures with a spherical shape, and the fluorescence intensity of the nanoparticles reached a maximum at a doping concentration of 0.050 mmol% for Zn 2+ and 2 mol% for Li + , respectively. In addition, the T 1 / T 2 (longitudinal/transverse relaxation time)-weighted MRI signals got enhanced due to the increased longitudinal relaxivity ( r 1 ) and transverse relaxivity ( r 2 ) after the doping by metal ions. Therefore, the materials reported here can be used for fluorescence and MR bimodal imaging, as tracers and for fluorescence detections. Graphic abstract
ISSN:1001-0521
1867-7185
DOI:10.1007/s12598-020-01591-2