Materials Literature
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We report on the refractive indices of Sn2P2S6 crystals in the wavelength range 550 - 2300 nm. The measurements are performed at room temperature using the minimum deviation method. The dispersion is described by a two oscillator model yielding the oscillator energies and strengths (Sellmeier parameters) for all polar…
A neutral electrochemical chemosensor based on TTF exhibited high selectivity for H2PO4- over a wide range of anions and the significant C-H...O hydrogen bonding between C=C-H of the TTF unit and H2PO4- played an important role in regulating the selectivity.
We report the syntheses and crystal structures of (NH4)11[Ln(III)(PMo11O39)2.xH2O (where Ln = every trivalent lanthanide cation except promethium) in which two lacunary [PMo11O39]7- anions sandwich an 8-coordinate Ln(III) cation to yield the complex anion, [LnIII(PMo11O39)2]11-. The 14 salts crystallise in two differe…
Electrodeposition and electrochemical charging of hybrid organic/inorganic films composed of the poly(3,4-ethylenedioxythiophene), PEDOT, conducting polymer matrix, and Keggin type polyoxometallate, phosphododecamolybdate or phosphododecatungstate redox centers, are described under conditions of aqueous solutions. The…
A complete series of copper(ii) halide complexes [CuX(tptm)](X = F (), Cl (), Br (), I (); tptm = tris(2-pyridylthio)methyl) with a novel Cu(II)-C(sp(3)) bond has been prepared by the reactions of [Cu(tptm)(CH(3)CN)]PF(6)(.PF(6)) with corresponding halide sources of KF or n-Bu(4)NX (X = Cl, Br, I), and the trigonal bi…
Damping constants of free oscillations of coupled gas bubbles change considerably when time delays due to the finite speed of sound in the surrounding liquid are taken into account. This effect is illustrated analytically by the example of a two-bubble system and numerically by the example of a bubble chain. By compar…
The roots of Calotropis gigantea have been used in leprosy, eczema, syphilis, elephantiasis, ulceration and cough in the Indian system of traditional medicine. The present communication evaluated its antipyretic activity by using yeast-induced and TAB (Typhoid) vaccine-induced pyrexia in rats and rabbits. In both yeas…
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.