Materials Literature
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Synthetic flavylium compounds can exist in several forms (multistate) that can be interconverted by more than one type of external stimulus (multifunctional). The intricate network of their reactions, when examined from the view point of ‘molecular-level devices’, reveals very interesting properties.
By selection of appropriately sized rare earth elements and suitable reaction atmosphere, a new double-perovskite-type iron oxide REBaFe 2 O 5+ w (RE=Nd and Sm) has been synthesized, with, ideally, all Fe atoms in square-pyramidal coordinations when w=0. Like in the related triple-perovskite-type YBa 2 Fe 3 O 8+ w ′ ,…
The interactions of naked and surface-modified poly(D,L-lactic acid) (PLA) nanocapsules (NC), where polyethyleneglycol (PEG) was adsorbed or covalently attached, have been studied with a macrophage-like cell line. The fluorescent oil marker, DiD, was successfully encapsulated in NCs in order to follow their interactio…
A versatile electrochemical grafting reaction connects conjugated molecules to porous silicon surfaces with either a positive or negative bias.
Dynamic response prediction of vehicle bodies is important for vehicle crashworthiness evaluation. The dynamic behaviour of vehicle body materials is dependent on material strain rates. One of the typical high strain rate tensile tests is the split Hopkinson bar test. In this paper, experiments have been conducted bas…
Magnesium Deposition and Dissolution Processes in Ethereal Grignard Salt Solutions Using Simultaneous EQCM‐EIS and In Situ FTIR Spectroscopy, Aurbach, Doron, Moshkovich, Moty, Schechter, Alex, Turgeman, Rachel
Three oligonuclear complexes of copper(II), [{Cu(Hfsaaep)Cl}2] 1, [{Cu(fsaaep)(H2O)}2] 2 and [Cu3(fsaaep)2][ClO4]2 3 have been synthesized, using the unsymmetrical tetradentate Schiff-base ligand 3-[N-2-(pyridylethyl)formimidoyl]salicylic acid, H2fsaaep. The crystal structures of complexes 1 and 2 have been solved. Th…
X-ray diffraction, differential scanning calorimetry and reflected light microscopy studies are made of disorder-order phase transformations in the region of homogeneity of a non-stoichiometric cubic vanadium carbide, (0.66 < y < 0.88). It is found that according to the composition of the carbide, both an ordered phas…
The pseudoelastic stress/strain hysteresis behavior observed in nickel-titanium (Ni-Ti) shape memory alloys (SMAs) above the austenite finish temperature can be exploited to provide passive structural damping in a variety of applications. The present study characterizes the damping behavior of Ni-Ti SMAs using the com…
An experimental study was performed to determine the effect of aging on martensitic transformations in NiTi, Polycrystalline and single crystal NiTi ([100], [110], and [111] orientations) were both considered, Stress-induced transformations in polycrystalline NiTi were found to closely resemble transformations in sing…
The ability of the paramagnetic macromolecular complex (GdDO3ASQ)30-Orn114 to enhance the water proton relaxation rate has been found to be a function of pH; this behaviour is related to the structural changes occurring in the polypeptide upon protonation of the side-chain NH2 groups.
Because of the isotropic and disordered nature of liquids, anisotropy hidden in many-body intermolecular interactions is usually neglected. Thus, it has been believed so far that the only order parameter required to describe a simple liquid is the density. Not accepting this common-sense view, we argue that a new addi…
An overview is given of the methods for preparation of birefringent films with patterned optical properties and their applications in liquid crystal displays. A versatile method of obtaining patterned films is based on manipulation of the helical twisting power of chiral dopants by photoisomerization reactions. Becaus…
A conjugated tetrapyridylporphyrin dimer has been synthesised, which binds two metalloporphyrin dimers to form a triple strand array; formation of this supramolecular assembly holds both components in planar conformations, increasing the conjugation.
EPR was mainly used to study the morphological, textural and structural behavior of zirconium hydroxide [ZrO(OH)2] with respect to calcination under air at different temperatures. For calcination temperatures less than 700°C, the tetragonal and monoclinic phases of the solid were present. In this range of temperatures…
The hydrothermal reaction of a mixture of V2O5, 1,2,4-triazole (trz), Cu(NO3)2·2.5H2O and H2O yields [{Cu3(trz)2}V4O12], a material constructed from one-dimensional {V4O12}n4n– chains linked to undulating {Cu3(trz)2}n4n+ networks.
Controlled procedures for the covalent anchoring of iron tetrasulfophthalocyanine onto amino-modified silicas have been developed to fix the complex either in a monomer or dimer form. Usually considered as a catalytically inert form, dimeric µ-oxo iron tetrasulfophthalocyanine grafted onto amino-modified silica or MCM…
Double hydroxides of the formula, having the same structure as that of α‐nickel hydroxide have been synthesized by partial substitution of zinc for nickel. The hydroxide having the composition x = 0.25 exhibits prolonged stability in 6 M KOH. Pasted electrodes comprising this material are rechargeable with a stabilize…
Domains in the low-temperature, ferrimagnetic, and ferroelectric, phase of magnetite ${\mathrm{Fe}}_{3}{\mathrm{O}}_{4}$ were investigated in the bulk, via their ferroelastic distortion, by means of synchrotron radiation x-ray topography, complemented by Nomarski optical microscopy on the surface. After cooling throug…
Sample controlled thermal analysis (SCTA) has been used to carefully and reproducibly eliminate the organic surfactant template from pure silica mesoporous MCM-41. The reproducibility allowed a number of intermediate species to be isolated permitting complementary measurements. To understand the mechanisms by which th…