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Synthesis of NaYF 4 Nanocrystals with Predictable Phase and Shape
Author(s) -
Liang X.,
Wang X.,
Zhuang J.,
Peng Q.,
Li Y.
Publication year - 2007
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.200600807
Subject(s) - nanocrystal , materials science , phase (matter) , nanotechnology , aspect ratio (aeronautics) , chemical engineering , chemical physics , organic chemistry , composite material , chemistry , engineering
In this Full Paper, a water/alcohol/oleic acid system was developed to prepare NaYF 4 nanocrystals with predictable size, shape and phase. The structural and kinetic factors that govern the phase and shape evolution of NaYF 4 nanocrystals have been carefully studied, and the influence of NaF to Y 3+ ratio, reaction time and temperature on the phase and shape evolution of the as‐prepared NaYF 4 samples was systematically investigated and discussed. It was found that the NaF to Y 3+ ratio was responsible for the shape evolution while temperature and reaction time was the key for the phase control of the NaYF 4 nanocrystals. This study would be suggestive for the precisely controlled growth of inorganic nanocrystals, especially for those usually crystallizing in diverse crystal structures.