Copper(II)-Quercetin complexes in aqueous solutions: spectroscopic and kinetic properties, (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• Copper(II)-Quercetin complexes in aqueous solutions: spectroscopic and kinetic properties, (Articolo in rivista) (literal)

Anno

• 2005-01-01T00:00:00+01:00 (literal)

Alternative label

• Torreggiani, A.(1)*; Tamba, M.(1); Trinchero, A.(2); Bonora, S(2). (2005)
  Copper(II)-Quercetin complexes in aqueous solutions: spectroscopic and kinetic properties,
  in Journal of molecular structure (Print)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Torreggiani, A.(1)*; Tamba, M.(1); Trinchero, A.(2); Bonora, S(2). (literal)

Pagina inizio

• 759 (literal)

Pagina fine

• 766 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 744 (literal)

Rivista

• Journal of molecular structure (Rivista)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• 1Istituto ISOF (CNR), via P. Gobetti 101, 40129 Bologna, Italy 2Dip. Biochimica, Universita` di Bologna, via Belmeloro 8/2, 40126 Bologna, Italy (literal)

Titolo

• Copper(II)-Quercetin complexes in aqueous solutions: spectroscopic and kinetic properties, (literal)

Abstract

• Quercetin (Querc), one of the most common dietary flavonols, was investigated in the presence of Cu(II) ions under basic conditions by different techniques in order to obtain some elucidation on the mechanism of its beneficial action against free radical-mediated damage. The spectroscopic studies (UV/Vis, Raman and IR) were useful to assess the relevant interaction of Querc with Cu(II) ions, the chelation sites and the dependence of the complex structure from the metal/ligand ratio. In the presence of a slight excess of the ligand (0.5 M/L) Querc acts as a bidentate ligand trough the catechol moiety on B ring. At M/LO1 the metal interaction also involves the CaO group and a close hydroxyl group. Thermogravimetric analysis confirmed the stoichiometry of the proposed complexes. Information on the reactivity of the Cu(II) chelates towards oxidizing radicals .OH, N3. and Br2-2 ) were obtained by the pulse radiolysis data. The chelates appear to fast react with these oxidizing radicals, giving rise to intermediates transients, namely resonance-stabilised phenoxyl radicals. (literal)

Prodotto di

• Institute for organic syntheses and photoreactivity (ISOF) (Istituto)
• Indagine genomica correlata al danneggiamento del DNA provocato da attacchi radicalici (PM.P06.006.002) (Modulo)
• Modelli biomimetici di stress radicalico e biomarcatori correlati (PM.P06.006.001) (Modulo)

Autore CNR

• MAURIZIO TAMBA (Unità di personale interno)
• ARMIDA TORREGGIANI (Unità di personale interno)

Incoming links:

Prodotto

• Institute for organic syntheses and photoreactivity (ISOF) (Istituto)
• Modelli biomimetici di stress radicalico e biomarcatori correlati (PM.P06.006.001) (Modulo)
• Indagine genomica correlata al danneggiamento del DNA provocato da attacchi radicalici (PM.P06.006.002) (Modulo)

Autore CNR di

• MAURIZIO TAMBA (Unità di personale interno)
• ARMIDA TORREGGIANI (Unità di personale interno)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Journal of molecular structure (Rivista)