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Information × Registration Number 0217U004779, 0116U008000 , R & D reports Title Gewald adducts as a new source of selenium in synthesis of luminescent nanoparticles - quantum dots. popup.stage_title Head Prodanov Maxsim Fedorovich, Registration Date 02-03-2017 Organization State Scientific Institution "Institute for Single Crystals" of National Academy of Sciences of Ukraine popup.description2 New selenium precursors based on 2-amino-3-cyanothiophene are proposed for the synthesis of CdSe, CdSe/CdS and CdSe/ZnS nanoparticles. Selenophene derivatives were prepared by Gewald reaction in one step with further modification of the molecular structure by acylation of amino group. The capacities of selenophene derivatives as a new selenium precursors for synthesis of semiconductor nanoparticles of AIIBVI type, in particular cadmium selenide, were explored. The application of these compounds in synthesis by method of high-temperature pyrolysis gives fluorescent nanoparticles of different shapes (tetrapods, dots) depending on used stabilizers, precursors and temperature conditions. The resulting nanoparticles can be simply coated with CdS shell "one-pot" by adding of sulphur precursor to the reaction mixture. СdSe and СdSe/CdS quantum dots of 'core-shell' structure or 'gradient alloy' have the quantum yield of luminescence of up to 20%. Product Description popup.authors Єдаменко Д. В. Д'яков М. Ю. Проданов М. Ф. popup.nrat_date 2020-04-02 Close