Straightforward Conversion Route to Nanocrystalline Monothiooxides of Rare Earths through a High-Temperature Colloid Technique

Abstract

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Synthesis and Characterization of Lanthanide Hydroxide Single‐Crystal Nanowires

“…As a consequence of their unique electronic structures and the numerous transition modes involving the 4f shell of their ions, lanthanide compounds usually have outstanding optical, electrical, and magnetic properties,12–22 and have been widely used as high‐quality phosphors,12 up‐conversion materials,13 catalysts,14 and time‐resolved fluorescence (TRF) labels for biological detection 15. There have been extensive studies regarding lanthanide chemistry at bulk or atomic levels,16–19 and the synthesis of lanthanide monothiooxides,20 lanthanide‐doped oxides or sulfides, organolanthanide compounds, the complexation behavior of lanthanide ions or atoms,16, 17 and the emission phenomena from lanthanides when bound to biomolecules (including calcium‐binding proteins and nucleic acids) 18. 19 Very recently, the synthesis of lanthanide oxide21 and fluoride22 nanoparticles with enhanced luminescence and photomagnetic properties has also been reported.…”

Unraveling the Role of Alkali Cations in the Growth Mechanism of Gd2O2S Nanoparticles

“…While lanthanide oxysulfides in bulk form have been readily employed in a number of applications like screens, lasers and scintillators, their preparation in nanoparticle form has been reported for the first time only in 2000. 1 The reason of this delay is the limited stability of oxysulfide nanoparticles due to competing oxide or sulfide phases. The development of a general and robust synthesis route of these nanoparticles would therefore be important to drive LED nanotechnology towards new directions.…”

Controlled synthesis of Eu3+-doped La2O2S nanophosphors by refluxing method

“…In order to study the formation process of La 2 O 2 S : Eu 3þ , we surveyed XRD pattern of the products without water washing at different reaction stages, which was displayed in Figure 1 ) at room temperature [22]. With rise of reaction temperature, the disproportionate rate of sulphur increased and more polyanions could be produced.…”