Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Here we report a general hydrothermal technology to obtain well-known rare earth fluorides involving β-NaYF(4):Yb, Er/Tm and β-NaGdF(4):Yb, Er/Tm upconversion nanocrystals, one new polymorph of γ-REF(3) (RE = Eu-Tm, Y) and hexagonal LiREF(4) (RE = Nd-Lu, Y) colloidal nanocrystals.
A new homoleptic sublimable indium(III) guanidinate, (In[(N(i)Pr)(2)CNMe(2)](3) (1), was synthesized from a facile high-yield procedure. Compound 1 crystallized is a P1 space group; a = 10.5989(14) Å, b = 11.0030(15) Å, c = 16.273(2) Å, α = 91.190(2)°, β = 96.561(2)°, γ = 115.555(2)°; R = 3.50%. Thermogravimetric anal…
Silver nanoparticles were synthesized in reverse micelles consisting of sucrose fatty acid esters by dissolving reactant powder in the water pool of reverse micelles through the solid-liquid extraction. Silver nanoparticles having various sizes and shapes were obtained at high concentration. The size of silver nanopar…
Helical periodic mesoporous 1,4-phenylene-silica nanorods with chiral crystalline walls were prepared using the self-assembly of a pair of enantiomers as templates.
Propagation of electromagnetic flelds and power in a circular waveguide containing chiral nihility metamaterial is studied. Space inside the waveguide is divided into two circular regions. One region contains chiral nihility metamaterial while other region is of free space. Two cases of the waveguide, in this regard,…
Type II polyether–silica hybrid films were successfully synthesized from 3-(glycidyloxypropyl)trimethoxysilane (GPTMS) through a novel photobase-catalyzed sol–gel and anionic polymerization using an α-amino acetophenone derivative as a tertiary amine photogenerator. We report here some characterization evidence establ…
Synthesis of V-Ti-Cr solid solution alloy by co-reduction of V2O5, Cr2O3 and TiO2 with aluminium in an open bomb reactor was investigated. The reduction of V2O5 and Cr2O3 was highly exothermic while reduction of TiO2 was not sufficiently exothermic for self-sustaining reaction. A range of composition of V2O5, Cr2O3 an…
In this study, beryllium-copper alloy was subjected to around -150° F for cold treatment and to around -300° F for cryogenic treatment and the effects of these cold and cryogenic treatments on the machinability of beryllium-copper workpieces in electro discharge machining have been investigated. Experimental results s…
Here we report the synthesis of hybrid hollow chitosan–silica nanospheres (CS–Silica NPs) with chitosan–polyacrylic acid (CS–PAA) nanoparticles as the template and doxorubicin (DOX) delivery based on CS–Silica NPs. The morphology and the microstructure of CS–Silica NPs were characterized by field emission scanning ele…
We develop a facile, effective and filter free infiltration method to fabricate high performance, freestanding and superthin epoxy nanocomposite films with directly synthesized Sing-Walled Carbon Nanotubes (SWNTs) film as reinforcement skeleton. It is found that the thicknesses of the nanocomposite films can be easily…
We report on the fabrication and nanoscale luminescence characteristics of an isolated rubrene single nanoparticle (NP). A solvent-vapor annealing process changed pristine rubrene NPs, prepared by a reprecipitation method, to perfect crystalline NPs. The formation and structural properties of crystalline and non-cryst…
Hydrogel films of chitosan (Cs) and agar blends of various proportions were prepared using physical solution blending. Some of the obtained films were ionically cross‐linked by treatment with calcium chloride solution. The obtained films were characterized by Fourier transform infrared (FTIR) spectroscopy, thermogravi…
Solution-phase synthesis of CuInSe2 nanowires without using metal nanocrystal catalysts has been demonstrated. The morphology of chalcopyrite CuInSe2 nanoparticles could be varied from spheres to highly anisotropic nanowires by varying the relative amount of strong and weak binding surfactants passivating the surface.…
The self-assembly of a hydrophobic pentapeptide has been investigated in an attempt to develop a drug delivery vehicle. The peptide forms a supramolecular helical column through intra- and intermolecular hydrogen bonding interactions and an interdigitated helical bundle structure in the solid state. In methanol soluti…
We report a very large 2D superlattice domain of hexagonal close-packed monodisperse gold nanoparticles, which is longer than 20 μm and of 8.8 nm superlattice constant in a millimetre-scale monolayer film, fabricated by simple self-assembly of drying water and toluene droplets with 2D nanoparticles at the air–liquid i…
Here we report the first photochromism of a newly designed [2.2]paracyclophane-bridged imidazole dimer in water. The photochromic dye with a hydrophilic and a hydrophobic substituent forms vesicles in water and shows instantaneous colouration upon UV light irradiation and successive rapid fading in the dark.
Drug targeting, using Silica-Gold core carrier particles loaded with antibiotic drugs is an emerging and significant method of disease treatment. Silica core particles were synthesized by Stober's method and it was functionalized with amine groups. The monodispersed Gold particles were prepared by conventional citrate…
The structures of a series of 3D-SBA-15 materials have been systematically studied by X-ray diffraction (XRD), nitrogen sorption, and electron tomography (ET) techniques. All the 3D-SBA-15 materials possess an ordered 2D hexagonal mesostructure with similar cell parameters, while the pore size measured from nitrogen s…
The structural control involving staging formation was studied in the nanocomposites of macrocyclic tetraazacrown ether carboxylic acid derivative (TECA) and layered double hydroxide (LDH) obtained by an osmotic swelling/restoration process. After NO(3)-type MgAl-LDH was osmotically swollen in formamide, TECA was adde…
Pure potassium dihydrogen phosphate (KDP) crystals and KDP doped with L-alanine have been grown by slow evaporation technique at room temperature. Grown crystals have been characterized using powder X-ray diffraction, (XRD), Energy Dispersive X-ray spectroscopy (EDX) and Fourier Transform Infrared spectroscopy (FTIR).…