Role of Surface Ligands in the Nanoparticle Assemblies: A Case Study of Regularly Shaped Colloidal Crystals Composed of Sodium Rare Earth Fluoride

Langmuir ◽  
2011 ◽  
Vol 27 (7) ◽  
pp. 3343-3347 ◽  
Author(s):  
Wei Feng ◽  
Ling-Dong Sun ◽  
Chun-Hua Yan
Keyword(s):  
Rare Earth ◽  
Colloidal Crystals ◽  
Surface Ligands ◽  
Nanoparticle Assemblies ◽  
Rare Earth Fluoride ◽  
Earth Fluoride

Characterization of Rare-Earth Fluoride Anti-Stokes Phosphors by Scanning arid Transmission Electron Microscopy

1971 ◽  
Vol 29 ◽  
pp. 142-143
Author(s):  
N. M. P. Low ◽  
L. E. Brosselard
Keyword(s):  
Electron Microscopy ◽  
Rare Earth ◽  
Elevated Temperatures ◽  
Stoichiometric Composition ◽  
Rare Earth Ions ◽  
Crystalline Solid ◽  
Precipitation Process ◽  
Rare Earth Fluoride ◽  
Earth Fluoride ◽  
Rare Earth Fluorides

There has been considerable interest over the past several years in materials capable of converting infrared radiation to visible light by means of sequential excitation in two or more steps. Several rare-earth trifluorides (LaF3, YF3, GdF3, and LuF3) containing a small amount of other trivalent rare-earth ions (Yb3+ and Er3+, or Ho3+, or Tm3+) have been found to exhibit such phenomenon. The methods of preparation of these rare-earth fluorides in the crystalline solid form generally involve a co-precipitation process and a subsequent solid state reaction at elevated temperatures. This investigation was undertaken to examine the morphological features of both the precipitated and the thermally treated fluoride powders by both transmission and scanning electron microscopy.Rare-earth oxides of stoichiometric composition were dissolved in nitric acid and the mixed rare-earth fluoride was then coprecipitated out as fine granules by the addition of excess hydrofluoric acid. The precipitated rare-earth fluorides were washed with water, separated from the aqueous solution, and oven-dried.

Thermal Decomposition of Rare Earth Fluoride Hydrates

Science ◽  
1959 ◽  
Vol 129 (3352) ◽  
pp. 842-842 ◽  
Author(s):  
W. W. WENDLANDT ◽  
B. LOVE
Keyword(s):  
Thermal Decomposition ◽  
Rare Earth ◽  
Rare Earth Fluoride ◽  
Earth Fluoride

High-pressure Syntheses and Characterization of the Rare-earth Fluoride Borates RE2(BO3)F3 (RE=Tb, Dy, Ho)

2013 ◽  
Vol 68 (11) ◽  
pp. 1198-1206 ◽  
Author(s):  
Ernst Hinteregger ◽  
Michael Enders ◽  
Almut Pitscheider ◽  
Klaus Wurst ◽  
Gunter Heymann ◽  
...  
Keyword(s):  
Crystal Structure ◽  
High Pressure ◽  
Rare Earth ◽  
Monoclinic Space Group ◽  
Rare Earth Fluoride ◽  
Earth Fluoride ◽  
Structure Determinations ◽  
New Compounds ◽  
Rare Earth Fluorides

The new rare-earth fluoride borates RE2(BO3)F3 (RE=Tb, Dy, Ho) were synthesized under highpressure/ high-temperature conditions of 1:5 GPa=1200 °C for Tb2(BO3)F3 and 3:0 GPa=900 °C for Dy2(BO3)F3 and Ho2(BO3)F3 in a Walker-type multianvil apparatus from the corresponding rareearth sesquioxides, rare-earth fluorides, and boron oxide. The single-crystal structure determinations revealed that the new compounds are isotypic to the known rare-earth fluoride borate Gd2(BO3)F3. The new rare-earth fluoride borates crystallize in the monoclinic space group P21/c (Z = 8) with the lattice parameters a=16:296(3), b=6:197(2), c=8:338(2) Å , b =93:58(3)° for Tb2(BO3)F3, a= 16:225(3), b = 6:160(2), c = 8:307(2) Å , b = 93:64(3)° for Dy2(BO3)F3, and a = 16:189(3), b = 6:124(2), c = 8:282(2) Å , β= 93:69(3)° for Ho2(BO3)F3. The four crystallographically different rare-earth cations (CN=9) are surrounded by oxygen and fluoride anions. All boron atoms form isolated trigonal-planar [BO3]3- groups. The six crystallographically different fluoride anions are in a nearly planar coordination by three rare-earth cations.

In situ high temperature NMR and EXAFS experiments in rare-earth fluoride molten salts

2004 ◽  
Vol 7 (12) ◽  
pp. 1135-1140 ◽  
Author(s):  
Anne-Laure Rollet ◽  
Catherine Bessada ◽  
Aïdar Rakhmatoulline ◽  
Yannick Auger ◽  
Philippe Melin ◽  
...  
Keyword(s):  
Rare Earth ◽  
High Temperature ◽  
Molten Salts ◽  
Rare Earth Fluoride ◽  
Earth Fluoride

One-step synthesis of carboxyl-functionalized rare-earth fluoride nanoparticles for cell imaging and drug delivery

RSC Advances ◽  
2015 ◽  
Vol 5 (43) ◽  
pp. 33999-34007 ◽  
Author(s):  
Zhiyang Zhang ◽  
Xiaoyan Ma ◽  
Zhirong Geng ◽  
Kuaibing Wang ◽  
Zhilin Wang
Keyword(s):  
Drug Delivery ◽  
Rare Earth ◽  
Hydrothermal Treatment ◽  
Cellular Uptake ◽  
Cell Imaging ◽  
Rare Earth Fluoride ◽  
Earth Fluoride ◽  
One Step ◽  
Fluoride Nanoparticles

CDDP was loaded onto the surface of carboxyl polymer-coated NaYF4:Yb3+/Tm3+ nanoparticles prepared by hydrothermal treatment in the form of Pt–O bonds, and delivered through cellular uptake of the NaYF4–CDDP composite.

Synthesis of multifunctional rare-earth fluoride/Ag nanowire nanocomposite for efficient therapy of cancer

2019 ◽  
Vol 104 ◽  
pp. 109940 ◽  
Author(s):  
Ziyu Chen ◽  
Guixia Liu ◽  
Xidong Zhang ◽  
Jingting Sui ◽  
Xiangting Dong ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Fluoride ◽  
Earth Fluoride ◽  
Ag Nanowire

ChemInform Abstract: Electrochemistry of Rare Earth Fluoride Molten Salts.

ChemInform ◽  
2010 ◽  
Vol 24 (23) ◽  
pp. no-no
Author(s):  
A. KANEKO ◽  
Y. YAMAMOTO ◽  
C. OKADA
Keyword(s):  
Rare Earth ◽  
Molten Salts ◽  
Rare Earth Fluoride ◽  
Earth Fluoride
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