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Information × Registration Number 0224U031923, 0123U102126 , R & D reports Title Fundamentals of development of new polymer composition media for information technology and clean energy technologies with predefined physico-chemical properties popup.stage_title Head Studzynskyi Serhii L., Доктор хімічних наук Registration Date 02-07-2024 Organization Taras Shevchenko National University of Kyiv popup.description2 The highly efficient (diffr. efficiency η ~ 11%) multifunctional holographic recording media (HRM) with a wide spectral range of photosensitivity, suitable for both photothermoplastic (PTP) and polarization holography were created on the basis of polyhedral oligosilsesquioxanes, containing fragments of the azo dyes and xanthene dye rhodamine B in an framework. The effect of "post-holographic recording" was revealed in the created HRM. The newPTP-HRМ based on the electron-donor aryl-containing oligomers and co-oligomers sensitized by the cationic polymethine dyes were developed. It is shown that the presence of the terminal groups of different electron-donating ability in the co-oligomers reduces the probability of the photogenerated charge carriers capture in the oligomer, which leads to an increase in the photoconductivity of the HRM and improves their information properties. The naphthalimide-containing methacrylic copolymers of various compositions were synthesized by radical polymerization methods; on their basis, new ionic polymethine dyes-sensitized photoconductive polymer compositions (PPC)-photovoltaics were created and investigated; it is shown that the obtained PPCs, depending on the ionicity type of sensitizer, are characterized by p- or n-type conductivity, respectively. It is shown that for anionic sensitizers, the efficiency of mobile charge carriers photogeneration in PPCs significantly depends on the excitation light quantum energy and increases with its increase. It was established that the corresponding photovoltaic response has a diffusion nature. The photobleaching of anionic dye-sensitizers was used to holograms record in the such PPC. On the basis of new azo-azomethine-polymers which containing fragments of the dye Congo Red in the polymer chain, polarization-sensitive HRM were obtained. The methods of synthesis of new methacrylic azoquinoline-containing monomers were developed. Product Description popup.authors Davydenko Iryna I. Dehoda Volodymyr Ya. Kuranda Mykola M. Mokrynska Olena V. Pavlov Valerii О. Petrusenko Svitlana R. Povorozniuk Volodymyr В. Iryna O. Savchenko Smokal Vitalii O. Chupryna Mykola H. popup.nrat_date 2024-07-02 Close