"2005-01-01+01:00"^^ . . . . . "Redox reakce voln\u00FDch radik\u00E1l\u016F, reaktivita v prost\u0159ed\u00ED hostitelsk\u00FDch molekul" . "http://www.isvav.cz/projectDetail.do?rowId=IAA400400505"^^ . "redox reactions; electrochemistry; free radicals; host-guest complexes; electron transfer; reactivity; mechanism"@en . . . . " free radicals" . " electron transfer" . "Electrochemistry of radicals of viologens, helicenes, fulleren and nitrocompounds was scrutinized. Inclusion complex of fulleren catalyzes nitrogen-to-ammonia conversion at mild conditions. New cationic catalysis and oscillations were found."@en . . "Redox reactions of free radicals, reactivity in presence of host molecules"@en . "redox reactions" . "32"^^ . "32"^^ . . . "2008-12-31+01:00"^^ . "Selected group of compounds yielding radical anions or cations will be characterized with regard to kinetics of electron transfer, radical reactivity and their chemical reactions. Detailed knowledge of reaction pathways of radicals in free state will enable to identify processes which can be suppressed or accentuated by inclusion of radical forms to a molecular cavity of an inert host molecule. We propose to seek means how to stabilize radicals for application in aquenous medium. Project will use a large choice of electrochemical relaxation methods available or developped in the group of the applicant. This includes voltammetry from mV/s to 50 kV/s, steady state methods on ultramicroelectrodes, electrochemical impedance spectroscopy, UV-Vis and FTIR spectroelectrochemistry and other. Certain new type of compounds will become available within the framework of current cooperation with foreign partners (France, Germany, Italy)."@en . . "IAA400400505" . " electrochemistry" . " reactivity" . . . "2009-07-02+02:00"^^ . "0"^^ . "2008-02-21+01:00"^^ . . "0"^^ . . "1"^^ . " host-guest complexes" . . . . "Objasn\u011Bna elektrochemie radik\u00E1l\u016F viologen\u016F, helicen\u016F, fullerenu, nitrol\u00E1tek a organometalick\u00FDch komplex\u016F. Inklusn\u00ED komplex fulerenu konvertuje dus\u00EDku na amoniak za m\u00EDrn\u00FDch podm\u00EDnek. Nalezen nov\u00FD typ kationtov\u00E9 katal\u00FDzy a oscila\u010Dn\u00EDho syst\u00E9mu."@cs . "Vybran\u00E9 skupiny l\u00E1tek, kter\u00E9 poskytuj\u00ED radik\u00E1lov\u00E9 anionty nebo kationty budou charakterizov\u00E1ny z hlediska kinetiky p\u0159enosu elektronu, reaktivity radik\u00E1l\u016F a jejich n\u00E1sledn\u00FDch chemick\u00FDch reakc\u00ED. Detailn\u00ED znalost mechanismu reakc\u00ED radik\u00E1l\u016F ve voln\u00E9m stavu umo\u017En\u00ED identifikovat proces, kter\u00E9 jsou potla\u010Deny nebo naopak podpo\u0159eny v p\u0159\u00EDpad\u011B, \u017Ee radik\u00E1lof\u00E9 formy mohou b\u00FDt za\u010Dlen\u011Bny do molekul\u00E1rn\u00ED kavity inertn\u00ED hostitelsk\u00E9 molekuly. Budeme hledat zp\u016Fsoby, jak reaktivn\u00ED formy stabilizovat pro aplikace ve vodn\u00E9m prost\u0159ed\u00ED. Projekt bude vyu\u017E\u00EDvat celou \u0161k\u00E1lu relaxa\u010Dn\u00EDch elektrochemick\u00FDch technik, dostupn\u00FDch a vypracovan\u00FDch v laborato\u0159i navrhovatele: voltammetriki od mV/s do 50kV/s, stacion\u00E1rn\u00ED metody na ultramikroelektrod\u00E1ch, elektrochemickou impedanci. UV-Vis a FTIR spektroelektrochemii. N\u011Bkter\u00E9 nov\u00E9 typy studovan\u00FDch l\u00E1tek budou z\u00EDsk\u00E1ny v r\u00E1mci dosavadn\u00ED spolupr\u00E1ce se zahrani\u010Dn\u00EDmi partnery (Francie, SRN, It\u00E1lie)." . .