Issue 5, 2014

A lanthanide-doping route to aspect-ratio-controlled KSc2F7 nanocrystals for upconversion, downconversion and magnetism

Abstract

A novel route was developed by doping rare-earth ions (RE3+) with large ionic radii (such as La3+, Ce3+, Sm3+, Eu3+, Tb3+, Dy3+, Yb3+ and Lu3+) for aspect ratio modification of KSc2F7 nanocrystals (NCs). The results revealed that the shape of the nanocrystals could be readily tuned from one-dimensional long nanorods to zero-dimensional ultrasmall nanospheres. The aspect ratio of the NCs could be adjusted over a broad range from 45 to 1 by changing the dopant or doping concentration. Interestingly it was found that doping of a lanthanide with a larger ionic radius was equivalent to increasing the amount of the dopant on the aspect ratio evolution. The NCs doped with different RE3+ also exhibited multifunctionality, including upconversion (UC) and downconversion (DC) emissions as well as paramagnetic properties.

Graphical abstract: A lanthanide-doping route to aspect-ratio-controlled KSc2F7 nanocrystals for upconversion, downconversion and magnetism

Supplementary files

Article information

Article type
Paper
Submitted
15 Aug 2013
Accepted
29 Oct 2013
First published
31 Oct 2013

J. Mater. Chem. C, 2014,2, 946-952

A lanthanide-doping route to aspect-ratio-controlled KSc2F7 nanocrystals for upconversion, downconversion and magnetism

Y. Ding, X. Zhang, H. Zhu and J. Zhu, J. Mater. Chem. C, 2014, 2, 946 DOI: 10.1039/C3TC31608D

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