Composite materials of Prussian Blue-polypyrrole (PB/PPy) were obtained via chemical redox process in mixed solution of iron (III), hexacyanoferrate (III), and pyrrole with chloride or nitrate supporting electrolyte. Synthesized composites in the form of a sedimented powder, or a film on the surface of Pt and ITO-coated glass, were characterized by various physical and electrochemical methods. Stability of PB/PPy films on Pt substrate was tested in electrocatalytic reaction of hydrogen peroxide reduction in weakly acidic medium (pH 6) as well as on ITO-coated glass substrate via electrochromic (spectroelectrochemical) measurements. Stability period of the amperometric response in 1 mM H 2 O 2 solution for films on Pt substrate synthesized in chloride media is 20 times longer than that of pure PB films obtained electrochemically in potentiostatic mode. Morphology of PB/PPy films has been found to depend on the composition of supporting electrolyte. Synthesis of PB/PPy composites in nitrate electrolyte leads to formation of a high-quality morphology, whereas PB/PPy films obtained in chloride solutions are cracked. In conformity with this observation, the stability period of the H 2 O 2 electroreduction for nitrate-synthesized films on Pt substrate was about 150 min, i.e., 80 times longer than that of pure Prussian Blue films without polymeric support and four times longer than that of chloride-synthesized films. Stability of the electrochromic response of PB/PPy films formed in nitrate media is 10 times higher than pure PB film.

Improving the efficiency of greenhouses is one of the most promising directions in development of agriculture. New perspectives in this field opened up with the development of the new methods of synthesis of a new generation of photoluminescent materials based on colloidal semiconductor photoluminophores (so-called "quantum dots"). It is shown that use of the covering materials containing quantum dots can significantly increase yields. Moreover, introduction of these quantum dots into commercial production can significantly improve the mechanical properties of the covering films used for greenhouses and slow down the process of their destruction. The durability of greenhouse films increases from 1 to 3 years.

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This paper is devoted to a consideration of the possibility to predict the color characteristics of a luminescent video display based on fluorescent polyolefin films containing CdSe/CdS/ZnS quantum dots. It is shown that the use of new colloid semiconductor materials based on CdSe/CdS/ZnS opens up wide prospects for the development of a new generation of luminescent video displays. New methods are developed and existing ones are adapted for the calculation and prediction of the color gamut of luminescent and liquidcrystal (LC)monitors.

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