A non-singlet oxygen mediated reaction photoinduced by phenalenone, a universal reference for singlet oxygen sensitization

Autores
Lorente, Carolina; Arzoumanian, Emmanuel; Castaño Espinal, Diana Carolina; Oliveros, Esther; Thomas, Andrés Héctor
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Photosensitized oxidations involve the generation of radicals (type I mechanism) and/or the production of singlet molecular oxygen (1O2) (type II mechanism). Phenalenone (PN) is one of the well-known type II photosensitizers and is widely used as a 1O2 reference sensitizer. In this work, we have studied the interaction of tryptophan (Trp) with the excited states of PN, the production of 1O2 in the presence of Trp, the formation of radicals and the kinetics of the photodegradation of Trp under different experimental conditions. In contrast to what is usually assumed, we have proven that PN is also able to act as a type I photosensitizer. Moreover, we have demonstrated that the predominant mechanism of the photosensitization of Trp by PN involves an electron transfer initiated-process.
Fil: Lorente, Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; Argentina
Fil: Arzoumanian, Emmanuel. Université Paul Sabatier; Francia
Fil: Castaño Espinal, Diana Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; Argentina
Fil: Oliveros, Esther. Université Paul Sabatier; Francia
Fil: Thomas, Andrés Héctor. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; Argentina
Materia
Singlet Oxygen
Electron Transfer
Phenalenone
Tryptophan
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/5171
Acceder
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network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling A non-singlet oxygen mediated reaction photoinduced by phenalenone, a universal reference for singlet oxygen sensitizationLorente, CarolinaArzoumanian, EmmanuelCastaño Espinal, Diana CarolinaOliveros, EstherThomas, Andrés HéctorSinglet OxygenElectron TransferPhenalenoneTryptophanhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Photosensitized oxidations involve the generation of radicals (type I mechanism) and/or the production of singlet molecular oxygen (1O2) (type II mechanism). Phenalenone (PN) is one of the well-known type II photosensitizers and is widely used as a 1O2 reference sensitizer. In this work, we have studied the interaction of tryptophan (Trp) with the excited states of PN, the production of 1O2 in the presence of Trp, the formation of radicals and the kinetics of the photodegradation of Trp under different experimental conditions. In contrast to what is usually assumed, we have proven that PN is also able to act as a type I photosensitizer. Moreover, we have demonstrated that the predominant mechanism of the photosensitization of Trp by PN involves an electron transfer initiated-process.Fil: Lorente, Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; ArgentinaFil: Arzoumanian, Emmanuel. Université Paul Sabatier; FranciaFil: Castaño Espinal, Diana Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; ArgentinaFil: Oliveros, Esther. Université Paul Sabatier; FranciaFil: Thomas, Andrés Héctor. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; ArgentinaRoyal Society of Chemistry2014-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/5171Lorente, Carolina; Arzoumanian, Emmanuel; Castaño Espinal, Diana Carolina; Oliveros, Esther ; Thomas, Andrés Héctor; A non-singlet oxygen mediated reaction photoinduced by phenalenone, a universal reference for singlet oxygen sensitization; Royal Society of Chemistry; RSC Advances; 4; 21; 2-2014; 10718-107272046-2069enginfo:eu-repo/semantics/altIdentifier/url/http://pubs.rsc.org/en/Content/ArticleLanding/2014/RA/c3ra46867dinfo:eu-repo/semantics/altIdentifier/doi/10.1039/c3ra46867dinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:07:43Zoai:ri.conicet.gov.ar:11336/5171instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:07:43.805CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A non-singlet oxygen mediated reaction photoinduced by phenalenone, a universal reference for singlet oxygen sensitization
title A non-singlet oxygen mediated reaction photoinduced by phenalenone, a universal reference for singlet oxygen sensitization
spellingShingle A non-singlet oxygen mediated reaction photoinduced by phenalenone, a universal reference for singlet oxygen sensitization
Lorente, Carolina
Singlet Oxygen
Electron Transfer
Phenalenone
Tryptophan
title_short A non-singlet oxygen mediated reaction photoinduced by phenalenone, a universal reference for singlet oxygen sensitization
title_full A non-singlet oxygen mediated reaction photoinduced by phenalenone, a universal reference for singlet oxygen sensitization
title_fullStr A non-singlet oxygen mediated reaction photoinduced by phenalenone, a universal reference for singlet oxygen sensitization
title_full_unstemmed A non-singlet oxygen mediated reaction photoinduced by phenalenone, a universal reference for singlet oxygen sensitization
title_sort A non-singlet oxygen mediated reaction photoinduced by phenalenone, a universal reference for singlet oxygen sensitization
dc.creator.none.fl_str_mv Lorente, Carolina
Arzoumanian, Emmanuel
Castaño Espinal, Diana Carolina
Oliveros, Esther
Thomas, Andrés Héctor
author Lorente, Carolina
author_facet Lorente, Carolina
Arzoumanian, Emmanuel
Castaño Espinal, Diana Carolina
Oliveros, Esther
Thomas, Andrés Héctor
author_role author
author2 Arzoumanian, Emmanuel
Castaño Espinal, Diana Carolina
Oliveros, Esther
Thomas, Andrés Héctor
author2_role author
author
author
author
dc.subject.none.fl_str_mv Singlet Oxygen
Electron Transfer
Phenalenone
Tryptophan
topic Singlet Oxygen
Electron Transfer
Phenalenone
Tryptophan
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Photosensitized oxidations involve the generation of radicals (type I mechanism) and/or the production of singlet molecular oxygen (1O2) (type II mechanism). Phenalenone (PN) is one of the well-known type II photosensitizers and is widely used as a 1O2 reference sensitizer. In this work, we have studied the interaction of tryptophan (Trp) with the excited states of PN, the production of 1O2 in the presence of Trp, the formation of radicals and the kinetics of the photodegradation of Trp under different experimental conditions. In contrast to what is usually assumed, we have proven that PN is also able to act as a type I photosensitizer. Moreover, we have demonstrated that the predominant mechanism of the photosensitization of Trp by PN involves an electron transfer initiated-process.
Fil: Lorente, Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; Argentina
Fil: Arzoumanian, Emmanuel. Université Paul Sabatier; Francia
Fil: Castaño Espinal, Diana Carolina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; Argentina
Fil: Oliveros, Esther. Université Paul Sabatier; Francia
Fil: Thomas, Andrés Héctor. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina. Universidad Nacional de La Plata; Argentina
description Photosensitized oxidations involve the generation of radicals (type I mechanism) and/or the production of singlet molecular oxygen (1O2) (type II mechanism). Phenalenone (PN) is one of the well-known type II photosensitizers and is widely used as a 1O2 reference sensitizer. In this work, we have studied the interaction of tryptophan (Trp) with the excited states of PN, the production of 1O2 in the presence of Trp, the formation of radicals and the kinetics of the photodegradation of Trp under different experimental conditions. In contrast to what is usually assumed, we have proven that PN is also able to act as a type I photosensitizer. Moreover, we have demonstrated that the predominant mechanism of the photosensitization of Trp by PN involves an electron transfer initiated-process.
publishDate 2014
dc.date.none.fl_str_mv 2014-02
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/5171
Lorente, Carolina; Arzoumanian, Emmanuel; Castaño Espinal, Diana Carolina; Oliveros, Esther ; Thomas, Andrés Héctor; A non-singlet oxygen mediated reaction photoinduced by phenalenone, a universal reference for singlet oxygen sensitization; Royal Society of Chemistry; RSC Advances; 4; 21; 2-2014; 10718-10727
2046-2069
url http://hdl.handle.net/11336/5171
identifier_str_mv Lorente, Carolina; Arzoumanian, Emmanuel; Castaño Espinal, Diana Carolina; Oliveros, Esther ; Thomas, Andrés Héctor; A non-singlet oxygen mediated reaction photoinduced by phenalenone, a universal reference for singlet oxygen sensitization; Royal Society of Chemistry; RSC Advances; 4; 21; 2-2014; 10718-10727
2046-2069
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://pubs.rsc.org/en/Content/ArticleLanding/2014/RA/c3ra46867d
info:eu-repo/semantics/altIdentifier/doi/10.1039/c3ra46867d
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Royal Society of Chemistry
publisher.none.fl_str_mv Royal Society of Chemistry
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.13397

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