Ion-plasma treatment of Cd1 ? x Zn x Te (x ～ 0.04) single crystals and application of antireflection diamond-like carbon films

The influence of ion-plasma treatment of Cd_{1 ? x} Zn _x Te (x ?? 0.04) single crystals, which precedes the deposition of an antireflection coating (a diamond-like a-C: H: N film) on the optical properties of the resulting structure, is investigated. Treatment is carried out in an argon, nitrogen, and hydrogen plasma. As follows from the optical properties of the a-C: H: N/Cd_{1 ? x} Zn _x Te, the structure treated in an argon plasma offers the highest transmission. A model of the optical system is proposed that takes into account the formation of transition layers after ion-plasma treatment and the effect of the type of ion on their characteristics. The absorption spectra of the a-C: H: N/Cd_{1 ? x} Zn _x Te system are analyzed, and bands assigned to the stretching and bending vibrations of C-H bonds, as well as to C-C and C=O bonds, are revealed. The presence of these bonds should be taken into account in designing and synthesizing these optical coatings.     

Structure of the Reaction Product of Anthranilic Acid Hydrazide with Carbon Disulfide in Alkaline Medium

The reaction of anthranilic acid hydrazide with carbon disulfide in alkaline medium yields 5-(2-aminophenyl)-2,3-dihydro-1,3,4-oxadiazole-2-thione rather than 3-amino-2-thioxo-1,2,3,4-tetrahydroquinazolin-4-one. The structure of the product was proved by spectral methods and chemical transformations.     

Cryochemical synthesis and antibacterial activity of hybrid nanocomposites based on dioxidine containing Ag and Cu nanoparticles incorporated in biopolymer cryostructurates

Russian Chemical Bulletin - Cryochemical synthesis of hybrid nanocomposites based on the antibacterial drug, dioxidine, and metals (Ag, Cu) was performed. According to the data of H1 NMR, UV, and...