Search academic texts

Information × Registration Number 0305U003254, 0103U004188 , R & D reports Title Quazi-twodimensional conductors and semiconductors based on the sulphur-and hitogen containing compounds popup.stage_title Катіон-радикальні солі на основі біс-етилендитіолотетратіофульвалену (КРС ЕТ) Head Starodub V., Registration Date 03-03-2005 Organization Kharkov national university named after V.N. Karazin popup.description2 Objects of research: New cation-radical salts (CRS) on a hydrogen-free ЕТ analogues basis, in particular, conducting composites on their basis. The purpose of work: To receive new CRS on hydrogen-free ЕТ analogues basis and conducting composites on their basis. Comprehensively to investigate their physical and chemical properties with the purpose of reception of new organic metals and superconductors with steadier metal basic condition. Synthesis of the given compounds and the received results of researches will enable to expand search of new stable quasi-three-dimensional organic metals and superconductors. Methods: modern methods of synthesis, IR-, UV- spectroscopy, X-ray analysis. The received results and novelty: For the first time are synthesized hydrogen-free fulvalene analogues general formula C6S8+2x, and also polymeric analogue ЕТ - (C6S8)n. It is revealed, that polymer easily enters reaction with hydrazine in the alkaline media with tetrasulfide formation, and at slow addition of a solution of iodine to a midday solution there is a return formation of initial polymer. Convertibility of the given reaction is confirmed with the polarografical measurements. The elemental analysis synthesized fulvalenes is carried out and are measured them IR-spectra of absorption. Conducting and spectral properties hydrogen-free ЕТ analogues are investigated. It is investigated the electrochemical behaviour of hydrogen-free ЕТ analogues. Are determined kinetic parameters of reduction-oxidation processes on a platinum electrode in solutions (NaS)4TTF (10-3 M). For the first time in a solution (NaS)4TTF (10-3 M) with background salt [(С2H5) 4N] [BF4] (10-2 M) electrosynthesis of CRS is carried out in mixes of solvents CH3CN:CH3ОН (3:1). As a result of electrosynthesis in a halvanostatic mode on the anode the brilliant golden film which is conducting for the first time is received. With the purpose of reception of conducting materials such as CRS composites of synthesized fulvalenes with iodine for the first time are prepared and features of their electrochemical properties are investigated. Scope: multifunctional materials for electronic technics, solid state chemistry and physics, chemistry of coordination compounds. Product Description popup.authors popup.nrat_date 2020-04-02 Close