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Information × Registration Number 0217U003159, 0115U005322 , R & D reports Title Photosensitive composites with picosecond optical response based on diarylethene derivatives and nanoparticles of silver and gold popup.stage_title Head Mukha Iuliia Petrivna, к.х.н. Registration Date 20-01-2017 Organization Institute of Surface Chemistry of the National Academy of Sciences of Ukraine popup.description2 The main purpose of the work was to study the optical properties of furan-based diaryletene (DAE) derivatives and to identify their effect on nanoparticles of noble metals with the aim to control photochromic properties in such systems and create a new type of organic-inorganic optoelectronic elements.on their basis. Picosecond cyclization reaction dynamics of furan-based photochromic diarylethenes with thiosemicarbazone side-chains studied by femtosecond transient absorption spectroscopy was by two main stages: 1) first one proceeds during the first 1.6 ps and is associated mainly with redistribution of ?-? molecular orbitals of openring molecules and is leading to the formation of excited closed-ring molecules; 2) a long-term relaxation via vibrational cooling of closed-ring form during the next 300 ps with the relaxation dynamics curve fitted by an exponential decay function with 68 ps time constant. Product Description popup.authors Снегір С.В. Ходько А.А. Хоменко В.В. popup.nrat_date 2020-04-02 Close