Materials Literature
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Mn-doped TiO 2 (Ti 1− x Mn x O 2 ) bulk samples with nominal composition x = 0.02, 0.04, 0.08 have been prepared by a solid-state reaction and sintered at different temperatures ranging from 450 °C to 900 °C. For samples with x = 0.02, magnetic investigations show that room temperature ferromagnetism can be obtained a…
Abstract We found that a novel Pd(0)‐catalyzed polycondensation of methyl propargyl carbonate ( 1 ) and bisphenol analogs 4 such as 4,4′‐dihydroxydiphenyl ether (4b ) proceeded successfully and gave polyethers 5 having exomethylene groups. The polycondensation was affected by the kind of bisphenol analogs used. The mo…
The study of the structural transition in nanoscale materials is of particular interest for their potential applications. In the present study, we have observed a lower temperature T = 250 °C for the phase transition from the sphalerite structure to the wurtzite structure in ZnS nanoparticles under a pressure of 1 GPa…
Biological reduction of nitric oxide (NO) to di-nitrogen (N(2)) gas in aqueous Fe(II)EDTA(2-) solutions is a key reaction in BioDeNOx, a novel process for NOx removal from flue gases. The mechanism and kinetics of the first step of NO reduction, that is, the conversion of NO to N(2)O, was determined in batch experimen…
A facile and green synthesis route to a mesoporous solid solution of Zn−Al spinel-type complex oxide (ZnAl 2 O 4 ) without using organic template has been successfully established. This approach involves the formation of precursor utilizing urea hydrolysis under hydrothermal conditions followed by calcination at high…
Abstract Pyridinium phenolates possess a dissymmetric delocalised π‐electron system providing a huge quadratic nonlinearity. They are a promising class of molecules for applications in photoelectronics and photonics. Semiempirical calculations indicate that the interplanar angle between the two aromatic rings leads to…
The high-pressure behavior of the Prussian Blue analogue $\mathrm{Fe}[\mathrm{Co}{(\mathrm{C}\mathrm{N})}_{6}]$ has been explored by energy- and angle-dispersive x-ray diffraction, Fourier transform infrared, and Raman spectroscopy. This cyanide-bridged framework material becomes x-ray amorphous above $10\phantom{\rul…
The coadsorption of R - and S -propylene oxide with R -2-butanol was studied on a dilute Au/Pd(111) alloy containing ∼8% gold using temperature-programmed desorption and reflection absorption infrared spectroscopy. Alloy formation strongly affects the surface chemistry of these molecules as compared to clean Pd(111).…
Inorganic fullerene-like (IF) nanoparticles and nanotubes of WS(2) were synthesized by a gas phase reaction starting from WCl(n) (n = 4, 5, 6) and H(2)S. The effect of the various metal chloride precursors on the formation of the products was investigated during the course of the study. Various parameters have been st…
A series of copper(II) complexes with pyridine-phenol-based N,O/donor ligands has been synthesized and structurally characterized. Slight variations of one of the building blocks (namely, the ligand or the counterion) lead to drastic changes in the nature of the resulting coordination assemblies. Indeed, depending on…
Abstract Dynamic light scattering (DLS) is a method used to size nanoscale and submicron particles by measuring their thermal motion (diffusion) in a liquid environment. The measured diffusion coefficients are related to the hydrodynamic particle size via the Stokes‐Einstein equation. This paper addresses the applicat…
Mn substituted Mg–Cu–Zn ferrites of composition Mg0.35Cu0.20Zn0.45O(Fe2−xMnx O3)0.97 have been prepared by the standard double sintering ceramic technique. X-ray diffraction patterns of the samples showed single phase cubic spinel structure without any detectable impurity phases. The lattice constant is found to incre…
We present and discuss first-principles calculations of the Jahn-Teller distortion and the electronic structure of the strontium titanate ferrite solid solution. It is shown that the use of the hybrid Hartree-Fock density functional theory approach with B3PW exchange-correlation functional enables a quantitative descr…
Abstract The structure‐property relationship of L‐tyrosine‐based polyurethanes was demonstrated by using different polyols and diisocyanates. L‐tyrosine‐based chain extender, desaminotyrosyl tyrosine hexyl ester (DTH), was used to synthesize a series of polyurethanes. Polyethylene glycol (PEG) or poly caprolactone dio…
Hybrid dendrimers, obtained by complete monofunctionalization of the peripheral amines of a "zero-generation" polyethyleneimine dendrimer, provide structurally diverse lamellar, columnar, and cubic self-organized lattices that are less readily available from other modified dendritic structures. The reaction of tris(2-…
The synthesis, electrochemical properties, and photoinduced electron transfer processes of a series of three novel zinc(II)-gold(III) bisporphyrin dyads (ZnP--S--AuP(+)) are described. The systems studied consist of two trisaryl porphyrins connected directly in the meso position via an alkyne unit to tert-(phenyleneth…
Concentration gradients in lumbar cerebrospinal fluid (CSF) for albumin and IgG were studied in 8 healthy individuals and 44 neuropsychiatric patients by serial sampling of 6 successive portions of CSF, each containing 4 ml, in all 24 ml. Significant and identical decreases between the first (0-4th ml) and the last (2…
Crystallization of linear low density polyethylene was studied through DSC analyses. Melting peak resolution was determined in order to establish the effect of crystallization conditions on polymer thermal fractionation. The isothermal number, fractionation window, and annealing time were varied, and suitable crystall…
Charge and spin state evolution of the transition metals in the LaMn1−xCoxO3 perovskite series was studied by means of high resolution x-ray absorption and emission spectroscopy. The gradual charge transfer from Mn to Co sites was observed upon increasing Co doping. The high spin of the Mn3+∕4+ and Co2+ ions is preser…
Abstract The high‐valent ruthenium‐containing [{PW11O39}2{(HO)RuIV–O–RuIV(OH)}]10– anion (1) has been synthesized by hydrothermal reaction and characterized by X‐ray diffraction, IR, multinuclear (31P and 183W) NMR spectroscopy andelectrochemistry. Single‐crystal analysis was carried outon Rb10[{PW11O39}2{(HO)RuIV–O–R…