in this paper, two double helical dinuclear copper(ii) complexes of bis-n,o-bidentate schiff base ligands bis(3-methoxy-n-salicylidene-4,4'-diaminodiphenyl)sulfone (l1) and bis(5-bromo-n-salicylidene-4,4'-diaminodiphenyl)sulfone (l2) were prepared and characterized by elemental analyses (chn), as well as thermal analysis. elemental analyses (chn) suggested that the reaction between ligands and ...

In this article, the laser-based powder bed fusion (L-PBF) processing behavior of pure copper is evaluated by employing a conventional infrared fiber laser with wavelength 1080 nm, small focal spot diameter 37.5 µm, and power levels up to 500 W. It shown that bulk solid parts near full density (? Archimedes = 99.3 ± 0.2%, ? Optical 99.8 0.1%) can be produced using W for chosen combination parti...

Abstract To demonstrate the relationship between type of working gas and efficiency plasma cleaning, kinetic energy incident ions was controlled by adjusting bias, effect different ion sources on sputtering yield under same bias compared. The flow generated glow discharge used to clean sample surface evaluate cleaning efficiency. Scanning electron microscope (SEM), x-ray photoelectron spectrosc...

The control of crystallization of praseodymium barium copper iron oxide, an intermediate temperature solid oxide fuel cell cathode material, has been demonstrated for the first time using a biotemplated sol-gel synthesis technique. The results obtained showed significant improvement in purity, synthesis time, surface area and simplicity over that previously reported.

the nanoparticles of gold doped with various percentage of copper (cu 10%, 25%, 75%) were synthesized by wet-chemical method at room temperature. copper (ii) sulfate and gold (iii) chloride trihydride was taken as the metal precursor and ascorbic acid as a reducing agent and anhydride maleic as surfactant. the reaction is performed with high-speed stirring at room temperature under nitrogen atm...