Synthesis and Investigation of Polymerization Properties of Methacrylic Monomers with Chiral Fragments

Methacrylic monomers containing chiral moieties and azobenzene derivatives were synthesized. As the chiral component was used menthol. The polymerization properties of monomer (5-methyl-2- (1-methyl)cyclohexanol with azomonomers were studied and the reactivity ratios as well as parameters Q and e characterizing the activity of the obtained monomers have been calculated. On basis of the synthesized monomers were synthesized chiral-photochromic copolymers and their absorption spectra were studied. It was shown that in the copolymers absorption spectra the absorption maxima are in the wavelength region of 340-360 nm and correspond to trans-form of azo fragment

SYMMETRY OF NORMAL MODES AND THEIR USE IN THE THEORY OF PHASE TRANSITIONS IN CRYSTALS

The theoretical investigation of the crystal symmetry display at phase transitions is the aim of the paper as well as the method development for the description of crystal structures, the finding of spin wave spectrums, sections of the non-elastic scattering. As a result the universial approach on the base of the symmetry theory to the united description of various types of phase transitions and spin wave spectrums has been created. The theory of phase transitions with a quantum-mechanical parameter of order has been developed. New types of ordering in hydrides of transition metals, in molecular crystals have been suggestedAvailable from VNTIC / VNTIC - Scientific & Technical Information Centre of RussiaSIGLERURussian Federatio

The implementation of energy-service contracts in the Republic of Sakha (Yakutia) as a tool to reduce government spending: experience and prospects

The article analyses the results of implementation of the energy-service contracts in the Republic of Sakha (Yakutia). A review of the Russian energy service market has been completed. Real savings of energy carriers according to metering devices in public enterprises, indicating the effectiveness of the technologies used, have been achieved. The used energy-saving technologies and solutions that allow one to achieve economic effect are considered. It is established that the existing mechanism of energy service allows the renovation of buildings with high-quality engineering support and high thermal protection of the shell

The implementation of energy-service contracts in the Republic of Sakha (Yakutia) as a tool to reduce government spending: experience and prospects

The article analyses the results of implementation of the energy-service contracts in the Republic of Sakha (Yakutia). A review of the Russian energy service market has been completed. Real savings of energy carriers according to metering devices in public enterprises, indicating the effectiveness of the technologies used, have been achieved. The used energy-saving technologies and solutions that allow one to achieve economic effect are considered. It is established that the existing mechanism of energy service allows the renovation of buildings with high-quality engineering support and high thermal protection of the shell

New azodyes for LC photoalignment and optical films

New series of highly anisotropic azodyes with a strong absorption in the visible range is developed. The potential of these materials for LC photoalignment is studied and their utility for LCD optical films is discussed. The mechanisms of the molecular photoordering in the azodye films are considered

Influence of Softening Temperature of Azobenzene Polymers and External Electric Field on Diffraction Efficiency of Polarization Holograms

Growth of the diffraction efficiency and recording velocity was found in the films of copolymers 4-((2- nitrophenyl) diazeniyl)phenylmethacrylate) with octylmethacrylate at room temperature holographic recording for copolymer with less softening temperature. Effect of strengthening of the diffraction efficiency was observed when charging surface of the films with recorded hologram in crown discharge