Energy transfer between singlet (1Delta(g)) and triplet (3Sigma(g)-) molecular oxygen in aqueous solution.

Martinez, Glaucia R; Ravanat, Jean-Luc; Cadet, Jean; Miyamoto, Sayuri; Medeiros, Marisa H G; Di Mascio, Paolo

Martinez, Glaucia R; Ravanat, Jean-Luc; Cadet, Jean; Miyamoto, Sayuri; Medeiros, Marisa H G; Di Mascio, Paolo.

Afiliação

Martinez GR; Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, C.P. 26077, CEP 05513-970, Bloco 12 sala 1223, São Paulo, Brazil.

J Am Chem Soc ; 126(10): 3056-7, 2004 Mar 17.

Article em En | MEDLINE | ID: mdl-15012128

RESUMO

We clearly demonstrate the occurrence of energy transfer between 18O2 (1Deltag) and 16O2 in the ground state (3Sigmag-) with subsequent conversion of the latter species into its singlet excited state (1Deltag) in aqueous solution. This was inferred from the results of incubation experiments involving DHPN18O2 as a chemical generator of 18O2 (1Deltag) and the water-soluble disodium salt of anthracene (EAS) used as a chemical trap of singlet oxygen. The products of the reaction were accurately analyzed by HPLC-ESI-MS.

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Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: J Am Chem Soc Ano de publicação: 2004 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos

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