A Strategy for Simultaneously Realizing the Cubic‐to‐Hexagonal Phase Transition and Controlling the Small Size of NaYF 4 :Yb 3+ ,Er 3+ Nanocrystals for In Vitro Cell Imaging
2012; Wiley; Volume: 8; Issue: 12 Linguagem: Inglês
10.1002/smll.201102703
ISSN1613-6829
AutoresZ. B. Wang, Jianhua Hao, H.L.W. Chan, Wing‐Tak Wong, Ka‐Leung Wong,
Tópico(s)Perovskite Materials and Applications
ResumoHexagonal-phase NaYF4:Yb3+,Er3+ up-conversion nanocrystals (UCNCs) are synthesized by a combination of refluxing and hydrothermal treatment. This strategy leads to only a slight increase in particle size, from 4.5 to ca. 10 nm, during the cubic-to-hexagonal phase transition. The hexagonal UCNCs can be internalized by HeLa cells and exhibit visible emission in the cells under near-infrared excitation.
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