Photoionization processes of charged pyrene derivatives in reverse micelles. The effect of the interfacial charge

Autores
Altamirano, Marcela Susana; Previtali, Carlos Mario
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The laser flash photolysis studies of (4-(1-pyrenyl)butyl)trimethylammonium bromide (PBTMA) and 1-pyrene sulfonic acid (PSA) were carried out in BHDC and AOT reverse micellar solutions in benzene. At low laser intensities only the triplet state was observed as a transient species and the photophysical properties of the probes are very similar in both systems. Notable differences arise at high laser intensities. Under these conditions a photoionization process is observed in BHDC for both probes, as is apparent by the presence of the radical cation of the pyrenyl group. Hydrated electrons are not observed at times longer than 100 ns. On the other hand the photoionization process is not detected in AOT. However, a slight photoionization may be induced in AOT by the presence of benzyl alcohol. These results are interpreted by the different ability of AOT and BHDC to interact with the geminate radical-electron pair.
Fil: Altamirano, Marcela Susana. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina
Fil: Previtali, Carlos Mario. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
Aot
Bhdc
Laser Photolysis
Photoionization
Pyrene Derivatives
Reverse Micelles
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/50135
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/50135
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Photoionization processes of charged pyrene derivatives in reverse micelles. The effect of the interfacial chargeAltamirano, Marcela SusanaPrevitali, Carlos MarioAotBhdcLaser PhotolysisPhotoionizationPyrene DerivativesReverse Micelleshttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The laser flash photolysis studies of (4-(1-pyrenyl)butyl)trimethylammonium bromide (PBTMA) and 1-pyrene sulfonic acid (PSA) were carried out in BHDC and AOT reverse micellar solutions in benzene. At low laser intensities only the triplet state was observed as a transient species and the photophysical properties of the probes are very similar in both systems. Notable differences arise at high laser intensities. Under these conditions a photoionization process is observed in BHDC for both probes, as is apparent by the presence of the radical cation of the pyrenyl group. Hydrated electrons are not observed at times longer than 100 ns. On the other hand the photoionization process is not detected in AOT. However, a slight photoionization may be induced in AOT by the presence of benzyl alcohol. These results are interpreted by the different ability of AOT and BHDC to interact with the geminate radical-electron pair.Fil: Altamirano, Marcela Susana. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; ArgentinaFil: Previtali, Carlos Mario. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaElsevier Science Sa2015-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/50135Altamirano, Marcela Susana; Previtali, Carlos Mario; Photoionization processes of charged pyrene derivatives in reverse micelles. The effect of the interfacial charge; Elsevier Science Sa; Journal of Photochemistry and Photobiology A: Chemistry; 310; 6-2015; 165-1701010-6030CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.jphotochem.2015.05.020info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1010603015001859info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:57:57Zoai:ri.conicet.gov.ar:11336/50135instacron: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 09:57:57.354CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Photoionization processes of charged pyrene derivatives in reverse micelles. The effect of the interfacial charge
title Photoionization processes of charged pyrene derivatives in reverse micelles. The effect of the interfacial charge
spellingShingle Photoionization processes of charged pyrene derivatives in reverse micelles. The effect of the interfacial charge
Altamirano, Marcela Susana
Aot
Bhdc
Laser Photolysis
Photoionization
Pyrene Derivatives
Reverse Micelles
title_short Photoionization processes of charged pyrene derivatives in reverse micelles. The effect of the interfacial charge
title_full Photoionization processes of charged pyrene derivatives in reverse micelles. The effect of the interfacial charge
title_fullStr Photoionization processes of charged pyrene derivatives in reverse micelles. The effect of the interfacial charge
title_full_unstemmed Photoionization processes of charged pyrene derivatives in reverse micelles. The effect of the interfacial charge
title_sort Photoionization processes of charged pyrene derivatives in reverse micelles. The effect of the interfacial charge
dc.creator.none.fl_str_mv Altamirano, Marcela Susana
Previtali, Carlos Mario
author Altamirano, Marcela Susana
author_facet Altamirano, Marcela Susana
Previtali, Carlos Mario
author_role author
author2 Previtali, Carlos Mario
author2_role author
dc.subject.none.fl_str_mv Aot
Bhdc
Laser Photolysis
Photoionization
Pyrene Derivatives
Reverse Micelles
topic Aot
Bhdc
Laser Photolysis
Photoionization
Pyrene Derivatives
Reverse Micelles
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The laser flash photolysis studies of (4-(1-pyrenyl)butyl)trimethylammonium bromide (PBTMA) and 1-pyrene sulfonic acid (PSA) were carried out in BHDC and AOT reverse micellar solutions in benzene. At low laser intensities only the triplet state was observed as a transient species and the photophysical properties of the probes are very similar in both systems. Notable differences arise at high laser intensities. Under these conditions a photoionization process is observed in BHDC for both probes, as is apparent by the presence of the radical cation of the pyrenyl group. Hydrated electrons are not observed at times longer than 100 ns. On the other hand the photoionization process is not detected in AOT. However, a slight photoionization may be induced in AOT by the presence of benzyl alcohol. These results are interpreted by the different ability of AOT and BHDC to interact with the geminate radical-electron pair.
Fil: Altamirano, Marcela Susana. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina
Fil: Previtali, Carlos Mario. Universidad Nacional de Río Cuarto. Facultad de Ciencias Exactas Fisicoquímicas y Naturales. Departamento de Química; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description The laser flash photolysis studies of (4-(1-pyrenyl)butyl)trimethylammonium bromide (PBTMA) and 1-pyrene sulfonic acid (PSA) were carried out in BHDC and AOT reverse micellar solutions in benzene. At low laser intensities only the triplet state was observed as a transient species and the photophysical properties of the probes are very similar in both systems. Notable differences arise at high laser intensities. Under these conditions a photoionization process is observed in BHDC for both probes, as is apparent by the presence of the radical cation of the pyrenyl group. Hydrated electrons are not observed at times longer than 100 ns. On the other hand the photoionization process is not detected in AOT. However, a slight photoionization may be induced in AOT by the presence of benzyl alcohol. These results are interpreted by the different ability of AOT and BHDC to interact with the geminate radical-electron pair.
publishDate 2015
dc.date.none.fl_str_mv 2015-06
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/11336/50135
Altamirano, Marcela Susana; Previtali, Carlos Mario; Photoionization processes of charged pyrene derivatives in reverse micelles. The effect of the interfacial charge; Elsevier Science Sa; Journal of Photochemistry and Photobiology A: Chemistry; 310; 6-2015; 165-170
1010-6030
CONICET Digital
CONICET
url http://hdl.handle.net/11336/50135
identifier_str_mv Altamirano, Marcela Susana; Previtali, Carlos Mario; Photoionization processes of charged pyrene derivatives in reverse micelles. The effect of the interfacial charge; Elsevier Science Sa; Journal of Photochemistry and Photobiology A: Chemistry; 310; 6-2015; 165-170
1010-6030
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jphotochem.2015.05.020
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1010603015001859
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier Science Sa
publisher.none.fl_str_mv Elsevier Science Sa
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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