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Information × Registration Number 0216U002321, 0115U002962 , R & D reports Title Physical-chemical bases of new nanocomposites based on conjugated polymers and 2D-nanoparticles - promising material for optoelectronics popup.stage_title Head Koshechko Vyacheslav Grygorievich, Registration Date 16-02-2016 Organization L.V.Pysarzhevsky Institute of Physical Chemistry of National Academy of Science of Ukraine popup.description2 Nanocomposites based on polyaniline and graphene with varying degrees of oxidation, which are used as a material of transport holes layer in optoelectronic devices (light-emitting diodes and solar cells) was obtained in the framework of the project. It was found that the improvement of the functional characteristics of the devices observed when using graphenes in respectively oxidized and not oxidized state, which may be due to the influence of the current density, as well as the electron work function. A new method of modifying graphene as result of reaction between mechanochemically generated active radicals of graphene and alcohols or chlorobenzene was proposed. The functionalization of graphene may lead to a decrease in the number of defects in them that was shown by the method of Raman spectroscopy. The nanocomposites based on a conjugated polymer MEH-PPV and modified graphene were obtained. It was found that they are characterized by a complete quenching of photoluminescence at the content of graphene 35w. %, which opens up the possibility of use such nanocomposites in photovoltaic cells. The graphene-like transition metals disulfide (MoS2 and WS2) and their nanocomposites with semiconducting conjugated polymers (MEH-PPV, SuperYellow) were obtained with using mechanochemical method. It was shown a substantial increase in the plymers photoluminescence intensity at low content of inorganic components(1-2w. %). The nanocomposites based on polyaniline (PAn) and nanostructured MoS2 and WS2 with different content of polymer were obtained by the mechanochemical method. It was found that the nanocomposites nMoS2/PAn and nWS2/PAn with the highest polymer content (75%) have highest values of specific discharge capacity of 405 and 450 F / g, respectively, as a supercapacitor electrodes. Nanocomposites with the highest content of inorganic component have the highest values of capacitance at high potential scan rate that probably is a result of the small thickness of the polymer layer around the inorganic nanoparticles. Product Description popup.authors Козаренко Ольга Андріївна Посудієвський Oлег Юлієвич Хазєєва Олександра Алмазівна popup.nrat_date 2020-04-02 Close