Phototoxic phytoalexins. Processes that compete with the photosensitized production of singlet oxygen by 9-phenylphenalenones

Cristina Flors, Peter R. Ogilby, Javier G. Luis, Teresa A. Grillo, Laura R. Izquierdo, Pier Luigi Gentili, Laura Bussotti, Santi Nonell

Producción científica: Artículo en revista indizadaArtículorevisión exhaustiva

42 Citas (Scopus)

Resumen

Experiments were performed to elucidate the excited-state behavior of 9-phenylphenalenones, which are phototoxic plant secondary metabolites involved in mechanisms of light-mediated plant defense. Using a combination of time-resolved and steady-state UV/visible spectroscopies, time-resolved IR absorption spectroscopy, time-resolved singlet oxygen phosphorescence measurements and cyclic voltammetry, we provide evidence of an intramolecular charge-transfer process in the excited singlet and the triplet states of 9-phenylphenalenones that modulates the photosensitized production of singlet oxygen.

Idioma originalInglés
Páginas (desde-hasta)95-103
Número de páginas9
PublicaciónPhotochemistry and Photobiology
Volumen82
N.º1
DOI
EstadoPublicada - ene 2006

Huella

Profundice en los temas de investigación de 'Phototoxic phytoalexins. Processes that compete with the photosensitized production of singlet oxygen by 9-phenylphenalenones'. En conjunto forman una huella única.

Citar esto