National Repository of Grey Literature 4 records found  Search took 0.02 seconds. 
Electrochemical characterization of water soluble fullerenes
Kocábová, Jana ; Gál, Miroslav ; Hromadová, Magdaléna ; Pospíšil, Lubomír
Fullere (C60) is a highly hydrophobic compound and it is considered to be insoluble in water. Different approaches were described for preparing aqueous solutions of C60. One of the possibilities is to create an inclusion complex of the C60 inside a cavity of gamma-cyclodextrin. Recently, we have shown that such complexes are capable of the electrochemical conversion of N2 to ammonium ions.
Electrochemical study of degradation of natural dyes used in artworks
Sokolová, Romana ; Degano, I. ; Hromadová, Magdaléna
This work is focused on the electrochemical study of natural flavonoid dyes used in artworks. Electrochemical behaviour of hematoxylin was studied in 0.1 M KCl, phosphate buffers of pH 5 – 12 and in acetonitrile. The mechanism of oxidation and the stability of intermediates as a function of pH are discussed. The electrochemical techniques are combined with spectrophotometry, LC/DAD and GC-MS analysis in order to identify the degradation products.
Electrochemical nitrogen fixation in the presence of fullerene -.gamma.-cyclodextrin complex
Kocábová, Jana ; Gál, Miroslav ; Hromadová, Magdaléna ; Pospíšil, Lubomír
We report on the electrochemical conversion of dinitrogen to ammonia at ambient pressure and 60oC mediated by reduced fullerene (C60) inside a molecular cavity of .gamma.-cyclodextrin (.gamma.-CD) in aqueous solution.
Electrochemistry of selected halogenated pesticides and their complexes with cyclodextrins
Sokolová, Romana ; Hromadová, Magdaléna ; Pospíšil, Lubomír
A detailed investigation of electrochemical properties of triazine pesticides, carboxyimid-type pesticides and benzonitrile pesticides was studied. Their degradation pathways include the protonization reactions coupled with electron transfer and several side chemical reactions. The study of inclusion complexes of halogenated pesticides with cyclodextrins was performed. The inclusion into the molecular cavities markedly influenced the decomposition mechanism of these compounds by protection of reactive groups by cyclodextrin environment. The degradation products were identified by GC-MS analysis and in-situ IR spectroelectrochemistry.

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