Materials Literature
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Abstract Syntheses and Structures of the First Polynuclear Manganese Guanidine Complexes and of the First Manganese Complexes Containing Mono‐Protonated Bis‐Guanidine Ligands Metallation of two differently alkylated bis‐guanidine ligands containing a central pyridine functionality, namely N 2 ,N 6 ‐bis(1,3‐dimethylimi…
We disclose the synthesis of a porphyrin-fullerene pinwheel that was subsequently observed by scanning tunneling microscopy. The molecule was designed to further our understanding of fullerene-surface interactions, directional control, and surface-rolling versus pivoting capabilities of this class of nanomachines. The…
Strontium sulfide doped with copper has been regarded as one of the most promising inorganic materials for the blue-green color phosphor. A wet chemical precipitation method with post-annealing is presented for the synthesis of copper-doped SrS nanoparticles. XRD studies revealed the phase purity of SrS particles with…
In this work, we report a hydrothermal method for self-assembly and organization of as-synthesized gold nanoparticles into various aggregative morphologies. Using the assembled gold nanoparticles as structural precursors, furthermore, mesoporous gold spheres in either discrete or interconnected form can be prepared at…
We have investigated, for oblique propagation, the dispersion relation and associated electric fields of one-dimensional photonic crystals composed of alternating layers of right-handed and left-handed materials (RHM and LHM). Calculations are performed by assuming that the dielectric permittivity and magnetic permeab…
The solubility data of adefovir dipivoxil in five different binary mixed solvents formed by isopropyl ether with ethanol, 2-propanol, dichloromethane, ethyl acetate, and acetone at 298.15 K were measured with the mole fraction of isopropyl ether ranging from 0.000 to 1.000. A laser monitoring observation technique was…
A new pyrochlore-type structure (Bi 1.56 Co 0.44 )(Sb 1.48 Co 0.52 )O 7 compound has been synthesized using ceramic method in air. Rietveld refinements using X-ray powder diffraction data confirmed an overall A 2 B 2 O 7 cubic pyrochlore structure with a = 10.44896 (2) Å and Fd -3 m symmetry. The reliability factors a…
Abstract Two mixed‐valent disc‐like hepta‐nuclear compounds of [Fe II Fe III 6 ( tea ) 6 ](ClO 4 ) 2 ( 1Fe , tea = N(CH 2 CH 2 O) 3 3− ) and [Mn II 3 Mn III 4 ( nmdea ) 6 (N 3 ) 6 ]·CH 3 OH ( 2Mn , nmdea = CH 3 N(CH 2 CH 2 O) 2 2− ) have been synthesized by the reaction of Fe(ClO 4 ) 2 ·6H 2 O with triethanolamine (H…
The structure of the thermoelectric lamellar misfit cobalt oxide [Bi0.84CaO2]2[CoO2]1.69 has been refined using single crystal X-ray diffraction data. Using the four dimensional superspace formalism for aperiodic structures, the superspace group is confirmed P2/m(0delta1/2) (a1 = 4.9069(4), b1 = 4.7135(7), b2 = 2.8256…
Abstract P(AN‐GMA) and PGMA fibers coated with monodisperse silver nanoparticles have been prepared by a combination of electrospinning and electroless plating. The morphology of the electrospun fibers remains unchanged after surface hydrazination. Oxidation of hydrazine in an ammoniacal solution of AgNO 3 reduces and…
Abstract Two europium complexes {Eu · dbm · carb · phen = tris[1‐{[6‐(9 H ‐carbazol‐9‐yl)hexoxy]phenyl}‐3‐{[6‐(9 H ‐carbazol‐9‐yl)hexoxy]phenyl}propane‐1,3‐dione](1,10‐phenanthroline)europium(III), Eu · dbm · carb · bath = tris[1‐{[6‐(9 H ‐carbazol‐9‐yl)hexoxy]phenyl}‐3‐{[6‐(9 H ‐carbazol‐9‐yl)hexoxy]phenyl}propane‐1,…
We have synthesized and characterized four different stable phases of Na ordered Na x CoO 2 , for 0.65< x <0.8. Above 100 K they display similar Curie-Weiss susceptibilities as well as ferromagnetic q =0 spin fluctuations in the CoO 2 planes revealed by 23 Na NMR data. In all phases from 59 Co NMR data we display evid…
Both the ferroelectric and magnetic properties of polycrystalline BiFeO3 films fabricated by chemical solution deposition were enhanced by adding small amounts of cobalt. Addition of 3at.% cobalt to BiFeO3 films increased the remanent polarization from 49to72μC∕cm2 and decreased the electric coercive field from 0.54to…
We here report on the formation of well-ordered 2D gold nanostructures at the air/water interface. Spreading a mixture of alkanethiol-capped gold nanoparticles (AuNPs) and an amphiphilic poly(p-phenylene) on a water surface and compressing the mixture to a surface pressure of 40 mN/m lead to the formation of a network…
Light absorption of $\ensuremath{\alpha}$-glycine crystals grown by slow evaporation at room temperature was measured, indicating a $5.11\ifmmode\pm\else\textpm\fi{}0.02\phantom{\rule{0.3em}{0ex}}\mathrm{eV}$ energy band gap. Structural, electronic, and optical absorption properties of $\ensuremath{\alpha}$-glycine cr…
Abstract This article presents the results from a study of yarn‐to‐yarn (YY) and yarn‐to‐metal (YM) frictions conducted on ring, rotor, air‐jet, and open‐end friction (OE friction) spun yarns at different relative speeds and input tensions. The results indicate that the behavior of frictions for YY is different than t…
Abstract Single crystals of two ternary thio‐germanates containing rare‐earth metals, Ln 4 (GeS 4 ) 3 ( Ln = Ce ( I ), Nd ( II )), have been isolated from the reaction of anhydrous rare‐earth trichloride ( Ln Cl 3 ) and ternary sodium thio‐germanate (Na 2 GeS 3 ) in evacuated quartz ampoules. We have determined the cr…
Siloxane polymers possess a unique set of properties that makes them highly suitable for optical applications. Our data present some of these properties, namely refractivity, dielectric properties, transmittance characteristics, and flexibility, for a variety of poly(dimethylsiloxane)s obtained by equilibrium ring-ope…
Abstract A spectral Galerkin method in the spatial discretization is analyzed to solve the Cahn‐Hilliard equation. Existence, uniqueness, and stabilities for both the exact solution and the approximate solution are given. Using the theory and technique of a priori estimate for the partial differential equation, we obt…
Abstract Chemical reduction of [1,2,5]thiadiazolo[3,4‐ c ][1,2,5]thiadiazole ( 2 ) with 1,1,2,2‐tetrakis(dimethylamino)ethene ( 3 ) leads to the [ 3 ] 2+ [ 1 2 ] 2– salt ( 4 ) whose X‐ray crystal structure reveals diamagnetic π‐dimers of the [1,2,5]thiadiazolo[3,4‐ c ][1,2,5]thiadiazolidyl radical anion ( 1 ). The int…