Materials Literature
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Pure and Gd 3+ ‐doped titanate nanotubes (TNTs) materials were synthesized by a hydrothermal method. Their morphology, optical properties, thermal stability, and magnetic properties were characterized by X‐ray diffraction (XRD), transmission electron microscope (TEM), UV‐Vis spectroscopy, thermal analysis, and magneti…
In this work the 2H NMR spin-lattice relaxation times, T1Z and T1Q, and the spin-spin relaxation times measured by means of the quadrupolar echo sequence, T2, have been analyzed in order to study the dynamic processes of a liquid crystalline dendrimer labelled on the aromatic core of the lateral mesogenic units in the…
A new salt of ziprasidone with high aqueous solubility has been discovered as a result of a salt screening and it has been found to exist in three anhydrous polymorphic forms. One of these forms shows the highest aqueous solubility ever reported for ziprasidone salts in combination with a high kinetic stability, becom…
A water-soluble poly(m-phenylene) bearing an achiral oligo(ethylene oxide) chain at the 5-position was synthesized by the Ni(0)-mediated homo-coupling polycondensation of a 3,5-dibromophenol monomer. The poly(m-phenylene) adopted a single helical conformation in protic media and self-assembled into a double helix in w…
In the present paper, we discuss the influence of point defects on electrical and optical characteristics of ZnO thin films grown by the atomic layer deposition (ALD) method. The films were grown on glass substrates at low temperature (100–200 °C). We used diethylzinc (DEZn) and deionized water as precursors. Room tem…
The conductivity of A- (Ca and Sr) and B-site (Ti) acceptor doped and has been characterized by means of constant frequency measurements and ac impedance spectroscopy in the temperature range of , and as a function of the partial pressures of oxygen and water vapor. Effects of H–D isotope shifts on the total conductiv…
We investigate the dependence of the optical conductivity of bilayer graphene (BLG) on the intra and interlayer interactions using the most complete model to date. We show that the next nearest neighbor intralayer coupling introduces new features in the low energy spectrum significantly changing the 'universal' conduc…
Micropatterned surfaces have been used as a tool for controlling the extent and strength of cell adhesion, the direction of cell growth and the spatial distribution of cells. In this study, chemically micropatterned surfaces were prepared by successive plasma polymerization of acrylic acid (AA) and 1,7-octadiene (OD)…
The crystal structure of the monomeric vanadium(III) species mer-[V(bipy)Cl(3)(MeCN)] (1; bipy = 2,2'-bipyridine) is reported. The solvothermal reaction of [V(bipy)Cl(3)(MeCN)]with Na(O(2)CPh) yields the T-shaped cluster [V(3)(O)Cl(3)(O(2)CPh)(2)(bipy)(2)(OEt)(2)], magnetic studies of which show strong intramolecular…
Electro-oxidation of Mn 2+ to MnO 2 by cyclic voltammetry on gold in acidic ͑0.1 M H 2 SO 4 ͒ and neutral ͑0.1 M Na 2 SO 4 ͒ media was studied using electrochemical quartz-crystal microbalance ͑EQCM͒.The cyclic voltammetric behavior of Au is different in these electrolytes.From EQCM data of mass variation during cycli…
First principles calculations reveal that formation of a fully ionized oxide vacancy leads to local condensation of coordination polyhedra forming Nb3O11(7-) in t-LaNbO4.
The effect of β-irradiation on silicate and aluminoborosilicate glasses doped with transition metals (TM) and rare earth (RE) elements has been studied using Electron Paramagnetic Resonance (EPR), Raman and luminescence spectroscopy. Irradiation leads to the reduction of both Cr and Mn ions in both types of glass matr…
We report a nanobelt structure along the 〈110〉 direction in perovskite–spinel (BiFeO 3 –CoFe 2 O 4 or BFO–CFO) composite epitaxial thin films deposited on SrTiO 3 (STO) substrates by pulsed laser deposition. The results reveal the nucleation and growth mechanism of a nanostructure: first nucleation of perovskite phase…
Separation of metallic and semiconducting single-walled carbon nanotubes (SWCNTs) is of great importance for SWCNT-based nano-electronics. We propose a tandem extraction strategy for efficient separation of different types of SWCNTs. This strategy is based on chiral angle discriminated adsorption of soluble condensed…
Periodic mesoporous phosphorus–nitrogen (P–N) frameworks with p6mm hexagonal and Imm body centered cubic symmetries were synthesized by a solvent-free nanocasting route using periodic mesoporous silicas (SBA-15 and SBA-16) as hard templates and (PNCl2)3 as precursor. The (PNCl2)3 was molten at 120 °C in nitrogen atmos…
Abstract magnified image Four new C 21 steroidal glycosides with an acyl group at C(12) and a straight sugar chain at C(3), namely auriculosides I–IV ( 1 – 4 , resp.), along with seven known steroidal derivatives, were isolated from the roots of Cynanchum auriculatum Royle ex Wight . Their structures were established…
The crystal structures of three HCl salts of pseudopeptidic macrocycles show a H-bonding tubular stack of the rings, where the amino acidic side chains (Val, Leu, Ile) display an inter-columnar “knobs into holes” hydrophobic interaction pattern.
This work investigated the effect of nominal boron (B) additions of 0.1 mass% and 1 mass% on the elevated-temperature (673–728 K) tensile-creep deformation behavior of a Ti-6Al-4V(mass%) alloy for applied stresses between 400–600 MPa. The alloys were evaluated in the as-cast and cast-then-extruded conditions. Boron ad…
Polymers containing 9,10-phenanthraquinone moieties as part of an extended π-electron system have been prepared by Suzuki couplings between 2,7- or 3,6-dibromophenanthraquinone and 9,9-dioctylfluorene-2,7-diboronic acid bispinacol ester. Closely related model compounds were prepared similarly. All the products were ch…
We observed Förster resonance energy transfer (FRET) with a covalently linked donor-acceptor pair D-A consisting of two naphthalene groups acting as the donors and a benzofurazan group acting as the acceptor and adsorbed onto Ag or Au nanoisland films. The use of metal nanoisland films, which caused a strong enhanceme…