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| Content Provider | PubMed Central |
|---|---|
| Author | Zhou, Na Qiu, Peiy Wang, Kan Fu, Hualin Gao, Guo Rong, He Cui, Daxiang |
| Copyright Year | 2013 |
| Abstract | Water-soluble upconversion nanoparticles (UCNPs) were prepared by a one-pot procedure in a two-phase reacting system. Four kinds of surfactants were tested in the synthesis process as capping agent to tune size and morphology of nanocrystals. Nanoparticles (approximately 70 nm) and rods (400 nm and 2.5 μm) were synthesized, respectively. Then, Fourier transform infrared spectroscopy analysis confirmed the successful linking between UCNP surface and surfactant. Ionic liquids (ILs) and surfactants participated in synthesis process together, competing with each other to cap on UCNPs. ILs still led the competition of capping, while surfactants worked as cooperative assistants to develop functional surface. Further characterizations such as high-resolution transmission electron microscopy and X-ray diffraction indicated the changes in crystallization and phase transformation under the influence of surfactants. In addition, the growth mechanism of nanocrystals and upconversion fluorescence luminance was also investigated in detail. At last, the cytotoxicity of UCNPs was evaluated, which highly suggest that these surface-functionalized UCNPs are promising candidates for biomedical engineering. |
| Related Links | http://dx.doi.org/10.1186/1556-276x-8-518 |
| Ending Page | 518 |
| Page Count | 1 |
| Starting Page | 518 |
| File Format | |
| ISSN | 1556276X |
| e-ISSN | 1556276X |
| Journal | Nanoscale Research Letters |
| Issue Number | 1 |
| Volume Number | 8 |
| Language | English |
| Publisher | Springer |
| Publisher Date | 2013-01-01 |
| Access Restriction | Open |
| Rights Holder | Springer |
| Subject Keyword | Materials Science(all) Condensed Matter Physics Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Nanoscience and Nanotechnology Condensed Matter Physics |
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