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

doi:10.1562/2005-04-07-RA-479

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

Producció científica: Article en revista indexada › Article › Avaluat per experts

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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 original	Anglès
Pàgines (de-a)	95-103
Nombre de pàgines	9
Revista	Photochemistry and Photobiology
Volum	82
Número	1
DOIs	https://doi.org/10.1562/2005-04-07-RA-479
Estat de la publicació	Publicada - de gen. 2006

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

abstract = "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.",

keywords = "Phenalenone-type phytoalexins, Triplet state energy, Pi-pi-asterisk, Charge-transfer, Molecular-oxygen, Flash-photolysis, Excited singlet, Fluid solutions, Phosphorescence, Electron",

author = "Cristina Flors and Ogilby, {Peter R.} and Luis, {Javier G.} and Grillo, {Teresa A.} and Izquierdo, {Laura R.} and Gentili, {Pier Luigi} and Laura Bussotti and Santi Nonell",

year = "2006",

month = jan,

doi = "10.1562/2005-04-07-RA-479",

language = "English",

volume = "82",

pages = "95--103",

journal = "Photochemistry and Photobiology",

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T1 - Phototoxic phytoalexins. Processes that compete with the photosensitized production of singlet oxygen by 9-phenylphenalenones

AU - Flors, Cristina

AU - Ogilby, Peter R.

AU - Luis, Javier G.

AU - Grillo, Teresa A.

AU - Izquierdo, Laura R.

AU - Gentili, Pier Luigi

AU - Bussotti, Laura

AU - Nonell, Santi

PY - 2006/1

Y1 - 2006/1

N2 - 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.

AB - 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.

KW - Phenalenone-type phytoalexins

KW - Triplet state energy

KW - Pi-pi-asterisk

KW - Charge-transfer

KW - Molecular-oxygen

KW - Flash-photolysis

KW - Excited singlet

KW - Fluid solutions

KW - Phosphorescence

KW - Electron

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AN - SCOPUS:33644787301

SN - 0031-8655

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JO - Photochemistry and Photobiology

JF - Photochemistry and Photobiology

IS - 1

ER -

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

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