Materials Literature
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Nanoporous Pt/TiO2 micro-particles were synthesized via an aerosol assisted co-assembly (AACA) route. Aerosol droplets were produced from a colloidal mixture of 5 nm Pt and 20 nm TiO2 nanoparticles, which formed spherical micro-aggregates of Pt and TiO2 with average diameter of around 1.2 μm. The resulting composite m…
Abstract Pd-catalyzed polycondensations of aniline derivatives and 4,4′-dibromoazobenzene afford polyaniline analogs containing an azobenzene unit in good yields. The obtained polymers are red in solution and in thin-film states, whereas they exhibit green metal-like luster in thick-film states.
Abstract Ab initio calculations were used to analyze the interactions between a molecule of B2H6 with HF and LiH at the MP2/aug-cc-pvdz computational level. B2H6 could interact with HF and LiH through both its terminal (Ht) and bridged (Hb) hydrogens. Interaction of Hb of B2H6 with HF and LiH result in formation of Hb…
Abstract Tetradecanoate-stabilized Ag–Pd alloy nanoparticles (NPs) were quantitatively synthesized by the controlled thermolysis of silver tetradecanoate and palladium tetradecanoate in the presence of tripropylamine. This approach is a one-pot synthetic method applicable to large-scale preparation. The Ag–Pd alloy NP…
The aim of this paper was to describe the temperature effect on the stability and the thermophysical properties of azithromycin (AZ). First, the density, the heat capacity and the solubility of original (commercial) AZ were determined. Second, the original samples were heated at 50 °C and 80 °C and their PLM, DSC, TGA…
Phenanthroline derivative, 2-(6-methylpyridin-2-yl)-1H-imidazo[4,5-f][1,10] phenanthroline (MIP) was synthesized and characterized by elemental analysis, FT-IR, 1H NMR, 13C NMR, and single crystal X-ray diffraction study. MIP was evaluated as corrosion inhibitor for mild steel in 0.5 M H2SO4 solution using gravimetric…
The role of MRI in the armory of diagnostic modalities for the medicine of the forthcoming years largely depends on how chemistry will provide advanced tools to meet the medical needs. This review aims at outlining the most innovative approaches that have been undertaken in the recent history of MRI contrast agents fo…
We report on the first principles computational modeling of the electronic and optical properties of ZnO nanosystems. 1D, 2D and 3D ZnO nanostructures with different characteristic size are examined and their lowest optical transition energies are calculated by hybrid TDDFT to investigate the effect of quantum confine…
Abstract Recent advancements in living cationic polymerization of vinyl ethers are reviewed, especially focusing on newly developed initiating systems using various Lewis acid catalysts. In concert with the diversification of efficient metal halide catalysts, several types of initiators (cationogens) have been shown t…
The role of spontaneous and piezoelectric polarization in III-V nitride heterostructure devices is discussed. Problems as well as opportunities in incorporating polarization in abrupt and graded heterojunctions composed of binary, ternary, and quaternary nitrides are outlined.
We report femtosecond time-resolved reflectivity measurements of coherent phonons in tellurium performed over a wide range of temperatures (3K to 296K) and pump laser intensities. A totally symmetric A$_{1}$ coherent phonon at 3.6 THz responsible for the oscillations in the reflectivity data is observed to be strongly…
Abstract The growing significance of nanocrystalline inorganic functional materials in the fields of catalysis, electronics, and energy conversion together with the increasing demand of the society for safer, softer, and “greener” technologies has drawn considerable attention of the researchers toward water-based solu…
The terahertz radiation-induced conductivity and dielectric polarization tensors as well as the Faraday and Kerr rotation angles and the non-equilibrium spin textures are studied for two-dimensional electron gas with strong spin-orbit coupling subjected to high magnetic field and to tunable periodic potential of a two…
Dielectric and piezoelectric properties of (Bi0.5K0.5+xLiy)TiO3 ceramics were studied in the range of x = −8–1 and y = 0–5 mol% of the stoichiometric K0.5. Secondary phases were not observed within −1 ≤ x ≤ 1 but started emerging at x ≤ −2 mol%. A tetragonal perovskite structure was maintained at all compositions desp…
(K, Na, Li)Nb0.95Sb0.05O3 lead-free piezoelectric ceramics were prepared by conventional mixed oxide method. The effect of Li substitution for the K and/or Na-sites of the (K0.5Na0.5)Nb0.95Sb0.05O3 ceramics on the piezoelectric and ferroelectric properties were investigated. The results show that the 1–3 mol% Li-subst…
The pyroelectric coefficient profile in SBN single crystals was calculated using the new method (Thermal Square Wave Method at single-frequency—TSWM) for determination of the pyroelectric coefficient distribution, which represents the polarization profile of ferroelectric ceramics and single crystals. It is shown that…
Pyrochlore-type PZN ceramics have been obtained from a two-stage process with columbite B-site precursor. In order to determine the chemical composition of these samples, a combination between X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) techniques has been performed. XRD analysis revealed the co…
Wide band gap ZnS-ZnO thin films were grown on c-Al2O3 by a pulsed laser deposition method using a pure ZnS target with a fixed substrate temperature of 600°C and a range of oxygen partial background pressures of 5 × 10−5∼50 Torr. With low oxygen deposition pressures, films were found to be mainly ZnS. However, with h…
0.94Bi0.5Na0.5TiO3–0.06BaTiO3 (BNT-06) lead-free piezoelectric ceramic has been prepared by using a novel low-temperature solid-state synthesis method. The relationship between the calcine conditions and the electrical properties of the ceramics was systematically studied. The results show that a small amount of the a…
Although the hexagonal barium titanate has been widely studied, the oxygen diffusivity has not been yet. The oxygen diffusivity is very important property, because the electrical properties are dominated by the amount of oxygen vacancy and the diffusivity. In this study, it is measured the diffusivity of oxygen by the…