National Repository of Grey Literature 6 records found  Search took 0.01 seconds. 
Povrchové bodové defekty v nanopráškách obsahující křemík připravené pomocí pulsní laserové ablace: IR důkaz peroxy radikálu SiOO(.)
Dřínek, Vladislav ; Vacek, Karel
We prepared nanopowder deposits with an increased concentration of certain point defects - silyl Si(.) and peroxy radical SiOO(.) using pulsed laser ablation (PLA). PLA of SiO2 target in He atmosphere (500 Pa) generates SiOO(.) species in conc. 10(20)/g and an exposure of the deposit to ozone pressured 5.10(-3) Pa in flow mode destroys SiOO(.) radical within seconds as detected by EPR and FTIR spectroscopies. In differencial FTIR spectra we observed a negative peak at 1035 cm(-1) that had the same time behaviour as EPR signal. According to literature the predicted stretching vibration in SiOO(.) is at 1080 cm(-1).
Vliv fázové separace aktivních komponent na účinnost solárních článků
Podhájecká, Klára ; Pfleger, Jiří
The influence of solvent vapor treatment on organic photovoltaic cells based on .pi.-conjugated polymer poly[1-(4-trimethylsilylphenyl)-2-phenylvinylene], and a low molecular-weight compound: N,N´-di(pent-3-yl)-perylene-3,4:9,10-bis(dicarboximide) was investigated.
Vliv modifikace jílu na stupeň dispergace a konečné vlastnosti nanokompozitů epoxid-montmorilonit
Rýznarová, B. ; Zelenka, J. ; Lednický, František ; Baldrian, Josef
The effect of four different clay surface modifiers on the degree of dispersion and final properties of epoxy-clay nanocomposites was studied.
Polymerní nanostruktury pro aplikace v solárních článcích: vztah morfologie a vlastností
Pfleger, Jiří ; Podhájecká, Klára ; Vu, Q. T.
Polymer nanocomposites were studied based on two systems: (i) a soluble derivative of polydiphenylvinylene with a nanocrystalline fraction of n-type low-molecular weight organic material N,N'-di(pent-yl)-perylene-3,4:9,10-bis(dicarboximide), and (ii) polythiophene with titanium dioxide nanoparticles, respectively.
Studium dimerů molekulárními můstky spojených stříbrných nanočástic pomocí metody SERS
Šmejkal, P. ; Vlčková, B. ; Moskovits, M. ; Pavel, I. ; Sládková, M. ; Pavlova, Ewa ; Šlouf, Miroslav
The ability of several molecules to act as linkers for Ag nanoparticles was tested. As new prospective linker molecules, dimercaptocarborane, ethidium bromide and 5,10,15,20-tetrakis(4-sulphonatophenyl)porphine (TSPP) were selected owing to their terminal functional groups, which can assemble the Ag nanoparticles together to form a dimer.
Fotoindukovaná cis/trans izomerizace alkanthiolového derivátu azobenzenu zakotveného na Au nanočásticích
Dammer, Ondřej ; Pfleger, Jiří ; Vlčková, B. ; Procházka, M. ; Špringer, T. ; Sedláková, Zdeňka
Photoinduced trans/cis isomerization of -[4-(4-octyloxy-phenylazo)-phenoxy]-pentane-1-thiol (ABT) attached to geld nanoparticles was investigated in Au organosol/ABT system as well as on glass slides functionalized by gold nanoparticles.

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