Search academic texts

Information × Registration Number 0213U006725, 0113U002803 , R & D reports Title Design of novel spyrocyclic systems with the condenced heterocyclic noviety popup.stage_title Head Doroshenko Andrii, Registration Date 25-12-2013 Organization Kharkov National University named after V.N. Karazin popup.description2 The main goal of this study - synthesis and investigation of novel derivatives of spyropyrane series with extended conjugated system as prospective photochromic materials capable to emit fluorescence light in their starting and final forms of photochemical transformations. A series of potentially photochromic molecules on the base of spyropyrane bicycle was synthesized, their chemical structure was proved by modern physico-chemical methods. Optical and photochemical characteristics of the compounds on study were investigated both in liquid homogeneous solutions and in solid polymer films. High velocity of the reversed "dark" chemical processes leading to restoration of the initial spyro-structure was determined for the spyrocyclic compounds in polymeric media. The quantum-chemical modeling of the molecular structure and spectra of the benzofuranic spyropyranes were conducted as well. An assumption concerning the probable singlet mechanism of photoinduced transformations of spyropyrane derivatives was made.5481 Product Description popup.authors Ільяшенко Р. Бородін О. Бородкіна А. Григорович О. Дорошенко А. Колодєзний Д. Посохов Є. Рошаль О. Чепелева Л. popup.nrat_date 2020-04-02 Close