Materials Literature
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The ability of a pyridine ligand on the photoresponsive 1,2-dithienylethene backbone to coordinate to a ruthenium porphyrin is modulated by interconverting the compound between its electronically insulated ring-open and electronically connected ring-closed form.
Circular dichroism (CD) spectroscopy is an important tool in structural biology, especially for protein secondary structure analyses. Synchrotron radiation circular dichroism (SRCD) spectroscopy is a modified version of the technique that uses the intense light from a synchrotron source to enable the collection of dat…
Tribology is the branch of engineering that deals with the interaction of surfaces in relative motion (as in bearings or gears): their design, friction, adhesion, lubrication and wear. Continuous miniaturization of technological devices like hard disc drives and biosensors increases the necessity for the fundamental u…
Morphology is one of the basic characteristics of porous layers.For electrochemically grown pores, morphology is strongly dependent on the starting phase of pore growth, the so-called nucleation phase.This paper addresses uniform and nonuniform nucleation of pores on the surface and consequently the development of por…
A three-step, one-pot procedure provides meso-aryl-α,β-unsubstituted bisdipyrrinato nickel complexes; oxidative coupling of these ligands followed by demetallation affords an unprecedented class of meso-aryl-α,β-unsubstituted bidipyrrins.
The pulsed galvanostatic deposition of nanometer-sized Pt particles on electrically conducting microcrystalline and nanocrystalline diamond thin-film electrodes is reported. The deposition was studied as a function of pulse number (10-50) and current density at the two morphologically different forms of diamond. The d…
A new and very efficient one-pot synthesis, in water, of 6 pi + 6 pi electron zwitterionic benzoquinonemonoimines involves the first examples of transamination reactions in quinonoid chemistry and allows the introduction of functionalities to, and the fine-tuning of the properties of, a large family of molecules with…
The synthesis, characterization and degradation of a hybrid chitosan (CTS)/glycidyl methacrylate (GMA) material are reported. These versatile materials (natural-synthetic materials) are potential candidates for dental restoratives. All materials were characterized by infrared spectroscopy (FT-IR), X-ray diffraction an…
Sb4Te3 and Sb8Te9 are members of the homology (Sb2Te3)m.(Sb2)n, with structures consisting of Sb2- and Sb2Te3-type slabs stacked along [001]; electrical conductivity and thermopower are reported for several members of this family.
A dimethylsiloxane diluted polysiloxane side chain co-polymer with non-chiral banana-shaped mesogenic units shows an optically isotropic ferroelectric switching polar smectic C phase (SmCPF) consisting of a conglomerate of homogeneously chiral domains with opposite handedness.
The photoluminescence spectrum of newly synthesized octakis[2-(carbazol-9-yl)ethyldimethylsiloxy]silsesquioxane in the solid state shows a strong monomeric emission peak, which suggests the suppression of the formation of excimers even in the solid state.
In this paper, nanotube composites were synthesized by loading various amounts of on nanotubes. The electrochemical capacitance performance of this composite was investigated by cyclic voltammgoram, ac impedance, and galvanostatic charge-discharge tests with a three-electrode system in solution. The results of these t…
A new approach for the synthesis and organization of cyano-bridged molecule-based magnetic nanoparticles has been developed using a mesostructured hybrid silica containing –(CH2)2C5H4N groups as matrix.
The metal capping barrier deposited by the electroless cobalt tungsten boron (CoWB) alloy plating method for ultralarge scale integration applications was investigated. The CoWB film was formed directly on copper without a palladium catalyst, using dimethyl amin borane (DMAB) as a reducing agent, and it was deposited…
A new series of supramolecular architectures based on Keggin polyoxometalates (POMs): (Hbpy)3[PMo12O40]·2.2H2O (1), (H3/4bppy)4H2[PMo12O40]·3H2O (2), (Hbppy)4H2[SiW12O40]·3H2O (3) and (Hppy)4H2[SiMo12O40] (4) (bpy = 4-(5-chloropyridin-2-yl)pyridine, ppy = 4-(5-phenylpyridin-2-yl)pyridine and bppy = 4-(5-(4-bromophenyl…
The first azo dye that gels from its aqueous solution was synthesized and its moist hydrogel was investigated with electron microscopy and atomic force microscopy; the anionic azo dye in aqueous solution forms a hydrogel on cationic surfaces even at concentrations 50 times below the minimal gelation concentration.
Electrochromic hydrated nickel oxide and nickel vanadium oxide thin films were deposited by reactive dc magnetron sputtering. Optical modulation was effected by insertion and extraction of protons. The proton diffusion coefficient during the insertion/extraction process was determined by galvanostatic intermittent tit…
Ca2CoTeO6 and Sr2CoTeO6 double perovskites have been prepared as polycrystalline powders by solid state reaction, in air. These materials have been studied by X-ray, neutron powder diffraction (NPD) and magnetic measurements. At room temperature, the crystal structure is monoclinic, space group P21/n for both compound…
Shear-induced crystallization behavior of three grades of PB-1 having different molecular weights and breadths of molecular weight distribution was investigated by means of rotational rheometry covering a shear rate range of 0.0001 up to 0.3 s-1 and temperatures between 99 °C and 107 °C. The up-shoot in viscosity afte…
Methods for the preparation of novel carbon-rich materials for use in electronic devices, lithium batteries or possible hydrogen storage applications are presented.