A5079647482- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Inorganic Chemistry and Materials
- Magnetism in coordination complexes
- Lanthanide and Transition Metal Complexes
- 2D Materials and Applications
- Quantum Dots Synthesis And Properties
- Radioactive element chemistry and processing
- Nuclear materials and radiation effects
- Advanced Semiconductor Detectors and Materials
- Bone Tissue Engineering Materials
- Crystal Structures and Properties
- Geochemistry and Elemental Analysis
- Chalcogenide Semiconductor Thin Films
- Luminescence Properties of Advanced Materials
- Crystallography and molecular interactions
- Layered Double Hydroxides Synthesis and Applications
- Iron-based superconductors research
- Advanced Condensed Matter Physics
- Electronic and Structural Properties of Oxides
Georgetown University
2019-2024
A series of complexes the type [Ln(Se2P(phenyl)2)3(CH3CN)x] (x = 1 or 2) have been synthesized and structurally characterized for Ln La–Lu (excluding Pm). The are straightforward to prepare crystallize soluble in solvents typically used nanoparticle synthesis. Solution-phase thermolysis these formed lanthanide diselenide LnSe2–x nanosheets, La–Ho, except Eu, which EuSe. By contrast, smallest lanthanides Er–Lu Ln2Se3 nanomaterials. dichalcogenides rare-earth analogues transition metal exhibit...
Rare-earth manganese pyrochlores (R2Mn2O7) are frustrated magnetic materials, which previously have only been accessed using expensive high-pressure and high-temperature synthesis. In the present work, we demonstrate a convenient synthetic approach to synthesize R2Mn2O7 at ambient pressure. A series of (R = Y, Ho-Lu) were prepared by simple cost-effective molten salt method NaCl KCl as flux. Moreover, phase-selectivity was demonstrated for yttrium oxides (YMnO3 Y2Mn2O7) variation synthesis...
In targeting reduced valent lanthanide chalcogenides, we report the first nanoparticle synthesis of mixed-valent ferromagnets Eu3 S4 and EuSm2 . Using divalent halides with bis(trimethylsilyl)sulfide oleylamine, prepared nanoparticles EuS, , SmS1.9 Sm3 All phases were identified using powder X-ray diffraction, transmission electron microscopy was used to confirm morphology size, magnetic susceptibility measurements for determining ordering temperatures valence. The UV/Vis, Raman...
The luminescence properties of two divalent europium complexes the type Eu[N(SPPh2)2]2(THF)2 (1) and Eu[N(SePPh2)2]2(THF)2 (2) were investigated. first complex, (1), was found to be isomorphous with reported structure complex 2 exhibited room temperature thermochromic emission upon cooling. We also but intensity sensitive temperature. Both low (100 K) single crystal X-ray structural investigation 1 indicate geometric distortions metal coordination, which may important for understanding...
Neodymium tritelluride is a layered van der Waals material, with correlated electronic properties including high mobility, charge density waves, and antiferromagnetism. We developed solution synthesis method to form free-standing nanosheets of NdTe
The synthesis and structural chemistry of two tetravalent thorium compounds precipitated from acidic bromide solutions are described. One the phases, [Th(H2O)10]Br4 (1), has been previously reported. other phase, [Th(H2O)4Br4](HPy·Br)2 (2), is a novel compound exhibits Th–Br coordination. While complexes with such bonding have observed in solid state, most isolated nonaqueous solutions. Notably, crystallize HBr(aq) containing pyridinium (HPy+) counterions; absence HPy+, only 1 observed....
Abstract In targeting reduced valent lanthanide chalcogenides, we report the first nanoparticle synthesis of mixed‐valent ferromagnets Eu 3 S 4 and EuSm 2 . Using divalent halides with bis(trimethylsilyl)sulfide oleylamine, prepared nanoparticles EuS, , SmS 1.9 Sm All phases were identified using powder X‐ray diffraction, transmission electron microscopy was used to confirm morphology size, magnetic susceptibility measurements for determining ordering temperatures valence. The UV/Vis, Raman...