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superlattices with EISA technique (Fig. 1.18). This method can
also be extended to prepare rare earth oxychlorides, where rare
earth trichloroacetates were used as precursors [169]. Similarly,
Zhuravleva
et al
.
synthesized EuF
nanoparticles by the thermal
3
decomposition of Eu(CF
COO)
complex in TOPO solvent [170].
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3
By co-thermolysis of CF
COONa and RE(CF
COO)
in organic
3
3
3
solvents, Yan
nanoparticles
with fine uniformity. By the elaborate adjustment of the ratio of Na/
RE, solvent composition, reaction temperature, and time, the phase
structure and morphology of the NaREF
et al
. also obtained high quality NaREF
4
nanocrystals could be
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manipulated. Pure
could be obtained at a low temperature
in OA/OM/ODE solvents within 30 min, while
α
-NaREF
4
β−
was formed
at higher temperatures in mixed solvents of OA and ODE (Fig. 1.19)
[171]. This method can also be extended to synthesize LiREF
NaRF
4
and
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KREF
nanoparticles by using CF
COOLi and CF
COOK instead [172].
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3
3
Figure 1.18
TEM images of the (a) edge-to-edge and (b) face-to-face
superlattices of LaF
nanoplates. Insets show the SAED
3
patterns.
Figure 1.19
TEM and HRTEM (inset) images of high quality (a) cubic and
(b) hexagonal phases of NaYF
nanopolyhedra and nanorods.
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