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Synthesis of Core-shell Lanthanide-doped Upconversion Nanocrystals for Cellular Applications
Published on: November 10, 2017
Lanthanide-doped Na(x)ScF(3+x) nanocrystals: crystal structure evolution and multicolor tuning
1School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore.
Journal of the American Chemical Society
|April 18, 2012
Summary
Researchers synthesized novel scandium-based nanomaterials with tunable phases. These materials exhibit unique upconversion (UC) properties, expanding applications in optics and diagnostics.
Area of Science:
- Materials Science
- Nanotechnology
- Inorganic Chemistry
Background:
- Rare-earth nanomaterials are known for energy upconversion (UC).
- Scandium (Sc3+)-based nanomaterials have not been previously studied for UC properties.
Purpose of the Study:
- To synthesize and control Na(x)ScF(3+x) nanocrystals.
- To investigate the effect of synthesis conditions on crystal phase and UC properties.
Main Methods:
- Synthesis of Na(x)ScF(3+x) nanocrystals using varying ratios of oleic acid (OA) and 1-octadecene (OD).
- Phase analysis of synthesized nanocrystals using X-ray diffraction.
- Investigation of upconversion emission properties.
Main Results:
- Controlled synthesis of pure monoclinic (Na3ScF6) and hexagonal (NaScF4) phases by adjusting the OA:OD ratio.
- Observed phase transitions and coexistence of phases within individual nanocrystals.
- Demonstrated distinct UC emission from Sc3+-based nanocrystals compared to traditional YF3-based ones.
Conclusions:
- Successful synthesis of Sc3+-based nanomaterials with tunable crystal structures.
- Unique UC emission properties of Sc3+-based nanocrystals broaden their potential applications.
- Opens new avenues for rare-earth nanomaterials in optical communications and disease diagnostics.
