ascorbic-acid has been researched along with triethylamine* in 2 studies
2 other study(ies) available for ascorbic-acid and triethylamine
| Article | Year |
|---|---|
Grid-double-helicate interconversion.
An interconversion between a binuclear Cu(I) double helicate and a tetranuclear Cu(II) grid is reported. The passage from the Cu(I) double helicate to the Cu(II) grid occurs through oxidation of Cu(I) into Cu(II) or through displacement of Cu(I) by Cu(II). The conversion of the Cu(II) grid into the Cu(I) double helicate occurs through treatment of the grid with triflic acid, reduction of Cu(II) with ascorbic acid, and neutralization with triethylamine. During the studies, in order to ascertain the structure of Cu(I) complexes, a heteroleptic binuclear Cu(I) double helicate was generated. Topics: Ascorbic Acid; Coordination Complexes; Copper; Crystallography, X-Ray; Ethylamines; Ions; Molecular Conformation; Oxidation-Reduction | 2013 |
Oxygen uptake induced by electron transfer from donors to the triplet state of methylene blue and xanthene dyes in air-saturated aqueous solution.
The effects of oxygen in the photolysis of rose bengal, eosin, erythrosin and methylene blue were studied in the presence of formate and electron donors, such as ascorbic acid, aromatic amino acids or aliphatic amines, e.g. triethylamine (TEA). The overall reaction is conversion of oxygen via the hydroperoxyl/superoxide ion radical into hydrogen peroxide. The quantum yield of oxygen uptake (Phi(-O2)) increases with the donor concentration. The photoinduced formation of H2O2 is initiated by quenching of the triplet state of the dye by the donor and subsequent reactions of both the dye and donor radicals with oxygen. For methylene blue and the xanthene dyes in the presence of 10 mM ascorbic acid or 0.1 M TEA Phi(-O2)=0.07-0.25. The spectral and kinetic properties of the specific dye transients, including the radicals involved and the pH and concentration dependences, are discussed. Topics: Air; Amino Acids, Aromatic; Ascorbic Acid; Coloring Agents; Electrons; Ethylamines; Hydrogen Peroxide; Hydrogen-Ion Concentration; Light; Methylene Blue; Molecular Structure; Oxygen; Peroxides; Photolysis; Quantum Theory; Solutions; Superoxides; Water; Xanthenes | 2008 |