Considering the question of efficiency of alternative energy systems, producing electricity from the position of interests of households it acquires an unexpected sound. The efficiency can be low (about 7-10%) providing that the heat released in converting is targeted i.e also used on the needs of households. In such an approach low efficiency becomes acceptable since the most part of energy usage in households is spent on systems using the heat (hot water supply etc.) even in the summer period. It is shown that converting of energy providing targeted heat dissipation can be provided by the phenomenon of generation of electromotive force by flowing of the low-speed, low-molecular salt current trough the polymeric sewed net; relevant experimental results are presented. Basing on the analysis of low-molecular ions currents balance by flowing of solution through the gel, the theory of the phenomenon is proposed. It is shown that the described phenomenon and based on its energy converting systems can be considered as an example illustrating the perspectivity of the new paradigm of green energetics development. Given paradigm is based on principles of technical and humanitarian knowledge convergence and is completely consistent with the conclusion that the environment-friendly technologies development is a technical and social issue at one time.

The absorption and fl uorescence spectra of a new styryl derivative of thiofl avin T 2-{(1E,3E)-4- in solvents with diff erent polarity and viscosity and also incorporated in the structure of amyloid fi brils and bovine serum albumin were investigated. A characteristic feature of the dye is an extremely low quantum yield of fl uorescence in low-viscosity solvents (10 -4 in water) which, however, increases signifi cantly in viscous solutions and when it is incorporated in the structure of proteins or amyloid fi brils. In the latter case the quantum yield increases by 8•10 3 times. On the basis of the experimental studies and quantum chemical calculations it was shown that Th-C23 exhibits the properties of a molecular rotor. The increase of the fl uorescence quantum yield in viscous solutions and in the biopolymers results from limitation of the torsional rotation of the molecular fragments, leading to fl uorescence quenching. The longwavelength location of the absorption spectrum and the fl uorescence spectrum of the new dye in the red region of the spectrum (520 and 600 nm) makes it possible to use it as a fl uorescent marker that is sensitive to the viscosity (hardness) of the microenvironment not only in vitro but also in vivo.

No abstract

No abstract

The absorption and fluorescence spectra of a new styryl derivative of thioflavin T tosylate 2-{(1E,3E)-4-[4-(dimethylamino)-2,6-dimethylphenyl]buta-1,3-dien-1-yl}- 3-ethyl-1,3-benzothiazolium-3 (Th-C23) in solvents of different polarity and viscosity, as well as when it is incorporated into the structure of amyloid fibrils and bovine serum albumin are investigated. A characteristic feature of the dye is an extremely low fluorescence quantum yield in low-viscosity solvents (10–4 in water), which, however, increases significantly in viscous solutions and when incorporated into the structure of proteins or amyloid fibrils. In the latter case, the quantum yield increases by 8х103 times. Based on experimental studies and quantum chemical calculations, it is shown that Th-C23 exhibits molecular rotor properties. An increase in the fluorescence quantum yield in viscous solutions and upon incorporation into biopolymers is the result of limiting the torsion rotation of molecular fragments, leading to fluorescence quenching. The long-wavelength position of the absorption spectrum and the fluorescence spectrum of the new dye in the red region of the spectrum (520 and 600 nm) makes it possible to use it as a fluorescent marker sensitive to the viscosity (hardness) of the microenvironment not only in vitro, but also in vivo.