With the development of science and technology,the demand for high-purity rare earth in the fields of functional materials increases day by *** of high purity rare earth arouses widespread attention at home and abroad...
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With the development of science and technology,the demand for high-purity rare earth in the fields of functional materials increases day by *** of high purity rare earth arouses widespread attention at home and abroad of the scientific
The structure and stoichiometry of the lanthanide(III)(Ln)complexes with the ligand Tri-n-octylphosphine oxide(TOPO)formed in a biphasic aqueous room-temperature ionic system have been *** to general organic solvent,a...
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The structure and stoichiometry of the lanthanide(III)(Ln)complexes with the ligand Tri-n-octylphosphine oxide(TOPO)formed in a biphasic aqueous room-temperature ionic system have been *** to general organic solvent,all lanthanides
A novel OER electrocatalyst, namely oxygen‐incorporated amorphous cobalt sulfide porous nanocubes (A‐CoS 4.6 O 0.6 PNCs), show advantages over the benchmark RuO 2 catalyst in alkaline/neutral medium. Experiments com...
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A novel OER electrocatalyst, namely oxygen‐incorporated amorphous cobalt sulfide porous nanocubes (A‐CoS 4.6 O 0.6 PNCs), show advantages over the benchmark RuO 2 catalyst in alkaline/neutral medium. Experiments combining with calculation demonstrate that the desirable O* adsorption energy, associated with the distorted CoS 4.6 O 0.6 octahedron structure and the oxygen doping, contribute synergistically to the outstanding electrocatalytic activity.
A cuprous dimer [Cu（POP）]2（pz4B）BF4·（CH3CN）3 （1, POP = bis（2-（diphenylphosphanyl）phenyl）ether, pz4B- = tetrakis（pyrazol-i-yl）borate anion） was synthesized from the reaction of Cu（CH3CN）4BF4, POP a...
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A cuprous dimer [Cu（POP）]2（pz4B）BF4·（CH3CN）3 （1, POP = bis（2-（diphenylphosphanyl）phenyl）ether, pz4B- = tetrakis（pyrazol-i-yl）borate anion） was synthesized from the reaction of Cu（CH3CN）4BF4, POP and Kpz4B in CH3CN at room temperature. The compound was characterized by elemental analysis and X-ray single-Crystal structure analysis. It crystallizes in monoclinic, space group P21/c with a = 12.3491（2）, b = 20.8845（3）, c = 33.0657（4） A, β = 94.251（1）°, V = 8504.3（2） A3, Z = 4, Mr = 1693.21, Dc = 1.322 g/cm3, F（000） = 3496,μ = 1.843 mm-1, GOOF = 1.031, the final R = 0.0442 and wR = 0.1235 for 14397 observed reflections with 1〉 2σ（I）. 1 is an ionic compound. It is composed of a BF4- anion and a {[Cu（POP）]2（pz4B）}＋ cation. The cation contains two [Cu（POP）]＋ cationic moieties and a pz4B- anionic linker. The Cu（I） ions show a distorted tetrahedral coordination geometry defined by two nitrogen atoms from a pz4B- bridging ligand and two phosphorous atoms from a POP terminal chelating ligand. The complex emits blue luminescence with the maximum peak at 457 nm with 3% quantum yield in solid state at room temperature. The Cu（I） centers are essentially electronically separated because both HOMO and LUMO contain very little contribution from the bridging ligand. The unexpected low emission is ascribed to the intramolecular interaction of the emissive centers.
Two efficient blue thermally activated delayed fluorescence compounds, B‐oCz and B‐oTC , composed of ortho‐donor (D)–acceptor (A) arrangement were designed and synthesized. The significant intramolecular D–A inte...
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Two efficient blue thermally activated delayed fluorescence compounds, B‐oCz and B‐oTC , composed of ortho‐donor (D)–acceptor (A) arrangement were designed and synthesized. The significant intramolecular D–A interactions induce a combined charge transfer pathway and thus achieve small Δ E ST and high efficiencies. The concentration quenching can be effectively inhibited in films of these compounds. The blue non‐doped organic light emitting diodes (OLEDs) based on B‐oTC prepared from solution processes shows record‐high external quantum efficiency (EQE) of 19.1 %.
BaTiO3 (BTO) nanoparticles (NPs) with various sizes from 6 to 210 nm were synthesized by a one-step hydrothermal method. The powder X-ray diffraction (XRD) patterns, scanning electron microscopy (SEM) and high resolut...
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