Dual laser excitation of a photochromic system: application to DODCI

Autores
Duchowicz, Ricardo; Scaffardi, Lucía Beatriz; Di Paolo, Roberto E.; Tocho, Jorge Omar
Año de publicación
1992
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A technique based on a combination of pump-and-probe fluorescence and absorption detection was developed in order to obtain the emission parameters of the pholoisomeric (P) species of dyes with noncompletely overlapped absorption spectra of P and the starting species (N ). Near total population transfer to the ground state of P was achieved using a continuous wave high fluence pump laser. A pulsed laser probed this population in its absorption region in such a way that the pulsed emission corresponded to fluorescence from P. Absorption measurements allowed us to follow the P population and to establish its relationship with pump fluence and wavelength. The direct monitoring of the P concentration increased the accuracy of the previously reported values for several photophysical parameters. Temperature dependent fluorescence quantum yield and lifetime, emission spectrum, and Arrhenius parameters of the nonradiative decay processes of P from 3,3' diethyloxa dicarbocyanine iodide (DODCI) are given. The mechanism for the direct transformation between N and P through the singlet excited states of DODCI is reevaluated.
Centro de Investigaciones Ópticas
Materia
Física
Pump-and-probe fluorescence
Absorption detection
Continuous wave high fluence pump laser
Singlet excited states of DODCI
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/92932
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/92932
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Dual laser excitation of a photochromic system: application to DODCIDuchowicz, RicardoScaffardi, Lucía BeatrizDi Paolo, Roberto E.Tocho, Jorge OmarFísicaPump-and-probe fluorescenceAbsorption detectionContinuous wave high fluence pump laserSinglet excited states of DODCIA technique based on a combination of pump-and-probe fluorescence and absorption detection was developed in order to obtain the emission parameters of the pholoisomeric (P) species of dyes with noncompletely overlapped absorption spectra of P and the starting species (N ). Near total population transfer to the ground state of P was achieved using a continuous wave high fluence pump laser. A pulsed laser probed this population in its absorption region in such a way that the pulsed emission corresponded to fluorescence from P. Absorption measurements allowed us to follow the P population and to establish its relationship with pump fluence and wavelength. The direct monitoring of the P concentration increased the accuracy of the previously reported values for several photophysical parameters. Temperature dependent fluorescence quantum yield and lifetime, emission spectrum, and Arrhenius parameters of the nonradiative decay processes of P from 3,3' diethyloxa dicarbocyanine iodide (DODCI) are given. The mechanism for the direct transformation between N and P through the singlet excited states of DODCI is reevaluated.Centro de Investigaciones Ópticas1992info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/92932enginfo:eu-repo/semantics/altIdentifier/issn/0022-3654info:eu-repo/semantics/altIdentifier/hdl/11746/502info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-22T17:00:06Zoai:sedici.unlp.edu.ar:10915/92932Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-22 17:00:06.909SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Dual laser excitation of a photochromic system: application to DODCI
title Dual laser excitation of a photochromic system: application to DODCI
spellingShingle Dual laser excitation of a photochromic system: application to DODCI
Duchowicz, Ricardo
Física
Pump-and-probe fluorescence
Absorption detection
Continuous wave high fluence pump laser
Singlet excited states of DODCI
title_short Dual laser excitation of a photochromic system: application to DODCI
title_full Dual laser excitation of a photochromic system: application to DODCI
title_fullStr Dual laser excitation of a photochromic system: application to DODCI
title_full_unstemmed Dual laser excitation of a photochromic system: application to DODCI
title_sort Dual laser excitation of a photochromic system: application to DODCI
dc.creator.none.fl_str_mv Duchowicz, Ricardo
Scaffardi, Lucía Beatriz
Di Paolo, Roberto E.
Tocho, Jorge Omar
author Duchowicz, Ricardo
author_facet Duchowicz, Ricardo
Scaffardi, Lucía Beatriz
Di Paolo, Roberto E.
Tocho, Jorge Omar
author_role author
author2 Scaffardi, Lucía Beatriz
Di Paolo, Roberto E.
Tocho, Jorge Omar
author2_role author
author
author
dc.subject.none.fl_str_mv Física
Pump-and-probe fluorescence
Absorption detection
Continuous wave high fluence pump laser
Singlet excited states of DODCI
topic Física
Pump-and-probe fluorescence
Absorption detection
Continuous wave high fluence pump laser
Singlet excited states of DODCI
dc.description.none.fl_txt_mv A technique based on a combination of pump-and-probe fluorescence and absorption detection was developed in order to obtain the emission parameters of the pholoisomeric (P) species of dyes with noncompletely overlapped absorption spectra of P and the starting species (N ). Near total population transfer to the ground state of P was achieved using a continuous wave high fluence pump laser. A pulsed laser probed this population in its absorption region in such a way that the pulsed emission corresponded to fluorescence from P. Absorption measurements allowed us to follow the P population and to establish its relationship with pump fluence and wavelength. The direct monitoring of the P concentration increased the accuracy of the previously reported values for several photophysical parameters. Temperature dependent fluorescence quantum yield and lifetime, emission spectrum, and Arrhenius parameters of the nonradiative decay processes of P from 3,3' diethyloxa dicarbocyanine iodide (DODCI) are given. The mechanism for the direct transformation between N and P through the singlet excited states of DODCI is reevaluated.
Centro de Investigaciones Ópticas
description A technique based on a combination of pump-and-probe fluorescence and absorption detection was developed in order to obtain the emission parameters of the pholoisomeric (P) species of dyes with noncompletely overlapped absorption spectra of P and the starting species (N ). Near total population transfer to the ground state of P was achieved using a continuous wave high fluence pump laser. A pulsed laser probed this population in its absorption region in such a way that the pulsed emission corresponded to fluorescence from P. Absorption measurements allowed us to follow the P population and to establish its relationship with pump fluence and wavelength. The direct monitoring of the P concentration increased the accuracy of the previously reported values for several photophysical parameters. Temperature dependent fluorescence quantum yield and lifetime, emission spectrum, and Arrhenius parameters of the nonradiative decay processes of P from 3,3' diethyloxa dicarbocyanine iodide (DODCI) are given. The mechanism for the direct transformation between N and P through the singlet excited states of DODCI is reevaluated.
publishDate 1992
dc.date.none.fl_str_mv 1992
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/92932
url http://sedici.unlp.edu.ar/handle/10915/92932
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0022-3654
info:eu-repo/semantics/altIdentifier/hdl/11746/502
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 12.982451

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