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
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/92932
Ver los metadatos del registro completo
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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 |
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Universidad Nacional de La Plata |
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UNLP |
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SEDICI (UNLP) - Universidad Nacional de La Plata |
repository.mail.fl_str_mv |
alira@sedici.unlp.edu.ar |
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12.982451 |