On the quenching of MLCT luminescence by amines: The effect of nanoaggregation in the decrease of the reorganization energy

Autores
Bracco, Larisa Laura Beatriz; Feliz, Mario Ruben; Wolcan, Ezequiel
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The MLCT luminescence quenching of pyRe(CO)3bpy+ and/or the polymer {[(vpy)2-vpyRe(CO)3bpy] CF3SO3}n–200 by amines proceeds via an electron transfer reaction which produces amine radical cations and pyReI (CO)3(bpy)•/–ReI (CO)3(bpy)•, respectively. The quenching follows a typical Stern–Volmer kinetics for both pyRe(CO)3bpy+ and {[(vpy)2-vpyRe(CO)3bpy]CF3SO3}n–200. The observed rate constants for the quenching of the ReI -polymer luminescence by amines show “vestiges” of the inverted effect predicted by Marcus while the quenching of pyRe(CO)3bpy+ luminescence follow the Rehm–Weller type of behavior. The lower value obtained for the total reorganization energy of the ReI -polymer than that for pyRe(CO)3bpy+ is rationalized in terms of the retarded solvent motions inside the nanoaggregates formed by the ReI -polymer in acetonitrile solutions.
Fil: Bracco, Larisa Laura Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
Fil: Feliz, Mario Ruben. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
Fil: Wolcan, Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
Materia
Amines
Rhenium
MLCT
Quenching
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:11336/275344
Acceder
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network_name_str CONICET Digital (CONICET)
spelling On the quenching of MLCT luminescence by amines: The effect of nanoaggregation in the decrease of the reorganization energyBracco, Larisa Laura BeatrizFeliz, Mario RubenWolcan, EzequielAminesRheniumMLCTQuenchinghttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The MLCT luminescence quenching of pyRe(CO)3bpy+ and/or the polymer {[(vpy)2-vpyRe(CO)3bpy] CF3SO3}n–200 by amines proceeds via an electron transfer reaction which produces amine radical cations and pyReI (CO)3(bpy)•/–ReI (CO)3(bpy)•, respectively. The quenching follows a typical Stern–Volmer kinetics for both pyRe(CO)3bpy+ and {[(vpy)2-vpyRe(CO)3bpy]CF3SO3}n–200. The observed rate constants for the quenching of the ReI -polymer luminescence by amines show “vestiges” of the inverted effect predicted by Marcus while the quenching of pyRe(CO)3bpy+ luminescence follow the Rehm–Weller type of behavior. The lower value obtained for the total reorganization energy of the ReI -polymer than that for pyRe(CO)3bpy+ is rationalized in terms of the retarded solvent motions inside the nanoaggregates formed by the ReI -polymer in acetonitrile solutions.Fil: Bracco, Larisa Laura Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; ArgentinaFil: Feliz, Mario Ruben. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; ArgentinaFil: Wolcan, Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; ArgentinaElsevier Science SA2010-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/275344Bracco, Larisa Laura Beatriz; Feliz, Mario Ruben; Wolcan, Ezequiel; On the quenching of MLCT luminescence by amines: The effect of nanoaggregation in the decrease of the reorganization energy; Elsevier Science SA; Journal of Photochemistry and Photobiology A: Chemistry; 210; 1; 2-2010; 23-301010-6030CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S1010603009004602info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jphotochem.2009.12.010info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-12-23T13:13:03Zoai:ri.conicet.gov.ar:11336/275344instacron: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:34982025-12-23 13:13:04.314CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv On the quenching of MLCT luminescence by amines: The effect of nanoaggregation in the decrease of the reorganization energy
title On the quenching of MLCT luminescence by amines: The effect of nanoaggregation in the decrease of the reorganization energy
spellingShingle On the quenching of MLCT luminescence by amines: The effect of nanoaggregation in the decrease of the reorganization energy
Bracco, Larisa Laura Beatriz
Amines
Rhenium
MLCT
Quenching
title_short On the quenching of MLCT luminescence by amines: The effect of nanoaggregation in the decrease of the reorganization energy
title_full On the quenching of MLCT luminescence by amines: The effect of nanoaggregation in the decrease of the reorganization energy
title_fullStr On the quenching of MLCT luminescence by amines: The effect of nanoaggregation in the decrease of the reorganization energy
title_full_unstemmed On the quenching of MLCT luminescence by amines: The effect of nanoaggregation in the decrease of the reorganization energy
title_sort On the quenching of MLCT luminescence by amines: The effect of nanoaggregation in the decrease of the reorganization energy
dc.creator.none.fl_str_mv Bracco, Larisa Laura Beatriz
Feliz, Mario Ruben
Wolcan, Ezequiel
author Bracco, Larisa Laura Beatriz
author_facet Bracco, Larisa Laura Beatriz
Feliz, Mario Ruben
Wolcan, Ezequiel
author_role author
author2 Feliz, Mario Ruben
Wolcan, Ezequiel
author2_role author
author
dc.subject.none.fl_str_mv Amines
Rhenium
MLCT
Quenching
topic Amines
Rhenium
MLCT
Quenching
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 MLCT luminescence quenching of pyRe(CO)3bpy+ and/or the polymer {[(vpy)2-vpyRe(CO)3bpy] CF3SO3}n–200 by amines proceeds via an electron transfer reaction which produces amine radical cations and pyReI (CO)3(bpy)•/–ReI (CO)3(bpy)•, respectively. The quenching follows a typical Stern–Volmer kinetics for both pyRe(CO)3bpy+ and {[(vpy)2-vpyRe(CO)3bpy]CF3SO3}n–200. The observed rate constants for the quenching of the ReI -polymer luminescence by amines show “vestiges” of the inverted effect predicted by Marcus while the quenching of pyRe(CO)3bpy+ luminescence follow the Rehm–Weller type of behavior. The lower value obtained for the total reorganization energy of the ReI -polymer than that for pyRe(CO)3bpy+ is rationalized in terms of the retarded solvent motions inside the nanoaggregates formed by the ReI -polymer in acetonitrile solutions.
Fil: Bracco, Larisa Laura Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
Fil: Feliz, Mario Ruben. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
Fil: Wolcan, Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas; Argentina
description The MLCT luminescence quenching of pyRe(CO)3bpy+ and/or the polymer {[(vpy)2-vpyRe(CO)3bpy] CF3SO3}n–200 by amines proceeds via an electron transfer reaction which produces amine radical cations and pyReI (CO)3(bpy)•/–ReI (CO)3(bpy)•, respectively. The quenching follows a typical Stern–Volmer kinetics for both pyRe(CO)3bpy+ and {[(vpy)2-vpyRe(CO)3bpy]CF3SO3}n–200. The observed rate constants for the quenching of the ReI -polymer luminescence by amines show “vestiges” of the inverted effect predicted by Marcus while the quenching of pyRe(CO)3bpy+ luminescence follow the Rehm–Weller type of behavior. The lower value obtained for the total reorganization energy of the ReI -polymer than that for pyRe(CO)3bpy+ is rationalized in terms of the retarded solvent motions inside the nanoaggregates formed by the ReI -polymer in acetonitrile solutions.
publishDate 2010
dc.date.none.fl_str_mv 2010-02
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/11336/275344
Bracco, Larisa Laura Beatriz; Feliz, Mario Ruben; Wolcan, Ezequiel; On the quenching of MLCT luminescence by amines: The effect of nanoaggregation in the decrease of the reorganization energy; Elsevier Science SA; Journal of Photochemistry and Photobiology A: Chemistry; 210; 1; 2-2010; 23-30
1010-6030
CONICET Digital
CONICET
url http://hdl.handle.net/11336/275344
identifier_str_mv Bracco, Larisa Laura Beatriz; Feliz, Mario Ruben; Wolcan, Ezequiel; On the quenching of MLCT luminescence by amines: The effect of nanoaggregation in the decrease of the reorganization energy; Elsevier Science SA; Journal of Photochemistry and Photobiology A: Chemistry; 210; 1; 2-2010; 23-30
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/url/https://www.sciencedirect.com/science/article/abs/pii/S1010603009004602
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jphotochem.2009.12.010
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
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 12.441415

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