. . "GA203/04/0296" . . "Neuvedeno."@en . . "V p\u0159edlo\u017Een\u00E9m projektu se zam\u011B\u0159\u00EDme na t\u0159i oblasti synt\u00E9zy materi\u00E1l\u016F pomoc\u00ED ultrazvuku. V prvn\u00ED \u010D\u00E1sti budeme studovat sonochemickou synt\u00E9zu bin\u00E1rn\u00EDch a tern\u00E1rn\u00EDch oxid\u016F v bezvod\u00FDch rozpou\u0161t\u011Bdlech vych\u00E1zej\u00EDce z homo a heterometalick\u00FDch slou\u010Denin alkoxid\u016F, octan\u016F a diketon\u00E1t\u016F. P\u0159iprav\u00EDme tak\u00E9 slo\u017Eit\u011Bj\u0161\u00ED prekurzorn\u00ED slou\u010Deniny, jako nap\u0159. polyedrick\u00E9 silanol\u00E1ty kov\u016F, jejich\u017E struktura je podobn\u00E1 stavebn\u00EDm jednotk\u00E1m pevn\u00FDch l\u00E1tek, a budeme studovat jejich sonochemickou p\u0159em\u011Bnu na pevn\u00E9 produkty. P\u0159\u00EDprava fosfore\u010Dnan\u016F kov\u016F pomoc\u00ED ultrazvukov\u00E9 aktivace nehydrolytick\u00FDch reakc\u00ED ester\u016F fosfore\u010Dn\u00E9 kyseliny s amidy, alkyly a halogenidy kov\u016F bude druhou oblast\u00ED na\u0161eho z\u00E1jmu. Vedle zm\u00EDn\u011Bn\u00FDch slou\u010Denin zde jako prekurzory budou tak\u00E9 slou\u017Eit i cyklick\u00E9 a polyedrick\u00E9 molekuly fosfon\u00E1t\u016F kov\u016F. Ve t\u0159et\u00ED \u010D\u00E1sti projektu se pokus\u00EDme \u0159\u00EDdit sonochemickou reakci pomoc\u00ED zm\u011Bny reak\u010Dn\u00EDch podm\u00EDnek a volbou vhodn\u00E9ho reak\u010Dn\u00EDho partnera doc\u00EDlit p\u0159\u00EDpravy r\u016Fzn\u00FDch materi\u00E1l\u016F zjedn\u00E1 v\u00FDchoz\u00ED l\u00E1tky. Jako modelovou slou\u010Deninu" . . "Sonochemick\u00E1 synt\u00E9za oxidov\u00FDch a fosf\u00E1tov\u00FDch materi\u00E1l\u016F" . . . . . "In this project we want to pursue three major directions of ultrasound-driven material synthesis. The first is the nonaqueous sonochemical synthesis of binary and ternary oxides starting from homo- and heterometallic alkoxides, acetates, and diketonates.We will also synthesize more elaborate precuror molecules mimicking building units of solid networks, such as polyhedral metallosilanolates, and examine their sonochemical conversion to solid products. The second area of our interest is the preparation of metallophosphate compounds by ultrasound-activated nonhydrolytic reactions of phosphoric acid esters with metal amides, alkyls and halides. In addition, cyclic and polyhedral metallophosphonates will be used as precursors. In the third part we will examine the possibility to control the outcome of the sonochemical reaction by chemical means and prepare several different materials from one precursor by changing the reaction conditions and partners. As a model compound we chose copper(II)"@en . "2007-10-16+02:00"^^ . "0"^^ . . . "0"^^ . . . "1"^^ . "37"^^ . . "Sonochemical synthesis of oxide and phosphate materials"@en . "37"^^ . "http://www.isvav.cz/projectDetail.do?rowId=GA203/04/0296"^^ . . . . "Amorphous nanoscopic binary oxides of iron, cobalt, aluminum, and yttrium, as well as mixed oxides, such as spinels CoFe2O4, perovskite YFeO3, and garnet Y3Fe5O12 with interesting magnetic properties and thermal behavior were prepared by sonolysis of 2,4"@en . "Sonol\u00FDza acetylaceton\u00E1tov\u00FDch komplex\u016F M(acac)n, (M = Fe, Co, Y, Al; n = 2,3) v tetraglymu v atmosf\u00E9\u0159e Ar za p\u0159\u00EDdavku \u0159\u00EDzen\u00E9ho mno\u017Estv\u00ED vody vedla ke vzniku amorfn\u00EDch nanoskopick\u00FDch bin\u00E1rn\u00EDch oxid\u016F \u017Eeleza, kobaltu, hlin\u00EDku a yttria. Sonol\u00FDza sm\u011Bs\u00ED komplex"@cs . . .