ИСТИНА

Планируется работа по созданию обратимых металлоорганических фотохромных систем с флуоресцентными свойствами с использованием фталимидных производных цимантрена и их аналогов олигомерного и полимерного строения для получения фотохромных жидко-кристаллических мезофаз и пленок.

Various derivatives of phthalimides belong to the widely studied family of fluorophores and fluorescent probes and sensors. Increased interest in these complexes is associated with their unique photophysical and photochemical properties: high extinction, high fluorescence quantum yield and high photosensitivity to external conditions. In this regard, it is still relevant to study the photophysical and photochemical properties and reactivity of this class of compounds for their further practical use. Di- and tricarbonyl complexes of cyclopentadienyl tricarbonylmanganese (cymantrene) are capable of producing stable and effective photochromic systems, inter- and intramolecular, with high quantum yields due to the formation of new chelate bonds. It is shown that the intramolecular coordination of the donor fragment of the substituent in the side chain of cyantren with manganese can dramatically change both photochromic and fluorescent and electrochemical properties with the formation of effective multiparametric photo- and electro-sensitive systems. The introduction of a cymantrenyl fragment into a phthalimide molecule can provide unique systems with a target molecule design that have various photochromic, fluorescent and electrochemical properties. The influence of the p-donor phthalimide and acceptor cymantrenyl fragment on the photophysical properties of the material will lead to the acquisition of new fundamental knowledge. It is planned to synthesize a number of phthalimide derivatives with mono- and bifunctional cymantrenyl fragments. For the first time, the process of photoinduced complexation due to the coordination of imide groups with an electron-deficient manganese atom will be comprehensively studied; the fluorescent properties of the obtained systems will be studied. The kinetics of intraand intermolecular thermal reactions of photolysis products will be studied. It is planned to create reversible organometallic photochromic systems with fluorescent properties using phthalimide derivatives of cimantrene and their oligomeric and polymer analogues to produce photochromic liquid crystal mesophases and films. The dependence of their optical and mechanical properties on the structure of polyimides obtained or modified by a cyanotrenyl fragment under the action of light and an electric field will be studied, the rheological and photorheological properties of new organometallic oligomers and polymers will be studied for the first time. The fundamental results obtained in the project can serve as a basis for the creation of new multifunctional photo- and electro-controlled materials.