Abstract
Laser radiation-induced decomposition of gaseous organic selenides and tellurides resulting in chemical deposition of nanostructured materials on cold surfaces is reviewed with regard to the mechanism of the gas-phase decomposition and properties of the deposited materials. The laser photolysis and laser thermolysis of the Se and Te precursors leading to chalcogen deposition can also serve as a useful approach to nanostructured chalcogen composites and IVA group (Si, Ge, Sn) element chalcogenides provided that it is carried out simultaneously with laser photolysis or thermolysis of polymer and IVA group element precursor.
Highlights
Organoselenium and organotellurium chemistry has been developing over the last 50 years owing to studies of the specific roles of the chalcogen atom in organic skeleta and the search for syntheticMolecules 2009, 14 applications of organoselenium and organotellurium reagents [1,2]
The photolysis or thermolysis of diselenides and selenides often yields a mixture of hydrocarbons, selenide, polyselenides and elemental selenium [4]
laser photolysis or laser thermolysis of a couple of gaseous precursors allows: (i) simultaneous gas-phase formation of atoms of chalcogen and metal, or atoms of chalcogen and polymer and (ii) mutual reaction/interaction of these gaseous species, which results in the gas-phase formation and deposition of nanoscopic metal chalcogenide or polymer-encapsulated chalcogen
Summary
Molecules 2009, 14 applications of organoselenium and organotellurium reagents [1,2]. Thermolytic and photolytic fragmentations of the C-X bonds (X=Se, Te) received considerable attention in mechanistic studies and studies of chemical transformations important for synthetic applications [3,4,5,6,7,8]. These fragmentations were mostly carried out in the liquid phase at elevated temperatures or by using conventional (lamp) sources of UV/Vis radiation. The laser-induced decomposition of organic chalcogenides can give information on products of the decomposition of these compounds in strictly homogeneous conditions and they prove valuable for chemical vapor deposition of several important solid products
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