Photophysical Processes of Polymethlne Dyes

Autores
Bilmes, Gabriel Mario; Tocho, Jorge Omar; Braslavsky, Silvia E.
Año de publicación
1989
Idioma
inglés
Tipo de recurso
artículo
Estado
versión enviada
Descripción
Laser Hash photolysis, laser induced optoacoustic spectroscopy (LIOAS), and fluorescence data were used for the study of the photophysical deactivation processes of excited 3,3 diethylthiadicarbocyanine iodide (DTDCI). Direct excitation of this molecule in air saturated methanol solutions at room temperature results in the formation of only one transient species, a photoisomer, the spectrum of which was derived for the 600-680 nm spectral range. The energy content difference between the ground state of the stable form and that of the photoisomer was evaluated, $latex \Delta E = 0.15 \pm 0.15 \enspace eV$, as well as limit values for the photoisomer fluorescence quantum efficiency $latex(\Phi _{f} ^{P}) < 0.2$ and for the quantum yield for the back photoisomerization from the first excited singlet state of the photoisomer to the ground state of the stable form $latex(\Phi _{PN}\leq 0.14)$.
Materia
Ciencias Físicas
laser hash photolysis
laser induced optoacoustic spectroscopy
fluorescence data
ground state
stable form
photoisomer fluorescence quantum efficiency
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
CIC Digital (CICBA)
Institución
Comisión de Investigaciones Científicas de la Provincia de Buenos Aires
OAI Identificador
oai:digital.cic.gba.gob.ar:11746/498

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oai_identifier_str oai:digital.cic.gba.gob.ar:11746/498
network_acronym_str CICBA
repository_id_str 9441
network_name_str CIC Digital (CICBA)
spelling Photophysical Processes of Polymethlne DyesBilmes, Gabriel MarioTocho, Jorge OmarBraslavsky, Silvia E.Ciencias Físicaslaser hash photolysislaser induced optoacoustic spectroscopyfluorescence dataground statestable formphotoisomer fluorescence quantum efficiencyLaser Hash photolysis, laser induced optoacoustic spectroscopy (LIOAS), and fluorescence data were used for the study of the photophysical deactivation processes of excited 3,3 diethylthiadicarbocyanine iodide (DTDCI). Direct excitation of this molecule in air saturated methanol solutions at room temperature results in the formation of only one transient species, a photoisomer, the spectrum of which was derived for the 600-680 nm spectral range. The energy content difference between the ground state of the stable form and that of the photoisomer was evaluated, $latex \Delta E = 0.15 \pm 0.15 \enspace eV$, as well as limit values for the photoisomer fluorescence quantum efficiency $latex(\Phi _{f} ^{P}) < 0.2$ and for the quantum yield for the back photoisomerization from the first excited singlet state of the photoisomer to the ground state of the stable form $latex(\Phi _{PN}\leq 0.14)$.Centro de Investigaciones Ópticas (CIOP)1989info:eu-repo/semantics/articleinfo:eu-repo/semantics/submittedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttps://digital.cic.gba.gob.ar/handle/11746/498enghttp://digital.cic.gba.gob.ar/handle/123456789/68info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/reponame:CIC Digital (CICBA)instname:Comisión de Investigaciones Científicas de la Provincia de Buenos Airesinstacron:CICBA2025-09-29T13:40:23Zoai:digital.cic.gba.gob.ar:11746/498Institucionalhttp://digital.cic.gba.gob.arOrganismo científico-tecnológicoNo correspondehttp://digital.cic.gba.gob.ar/oai/snrdmarisa.degiusti@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:94412025-09-29 13:40:23.447CIC Digital (CICBA) - Comisión de Investigaciones Científicas de la Provincia de Buenos Airesfalse
dc.title.none.fl_str_mv Photophysical Processes of Polymethlne Dyes
title Photophysical Processes of Polymethlne Dyes
spellingShingle Photophysical Processes of Polymethlne Dyes
Bilmes, Gabriel Mario
Ciencias Físicas
laser hash photolysis
laser induced optoacoustic spectroscopy
fluorescence data
ground state
stable form
photoisomer fluorescence quantum efficiency
title_short Photophysical Processes of Polymethlne Dyes
title_full Photophysical Processes of Polymethlne Dyes
title_fullStr Photophysical Processes of Polymethlne Dyes
title_full_unstemmed Photophysical Processes of Polymethlne Dyes
title_sort Photophysical Processes of Polymethlne Dyes
dc.creator.none.fl_str_mv Bilmes, Gabriel Mario
Tocho, Jorge Omar
Braslavsky, Silvia E.
author Bilmes, Gabriel Mario
author_facet Bilmes, Gabriel Mario
Tocho, Jorge Omar
Braslavsky, Silvia E.
author_role author
author2 Tocho, Jorge Omar
Braslavsky, Silvia E.
author2_role author
author
dc.subject.none.fl_str_mv Ciencias Físicas
laser hash photolysis
laser induced optoacoustic spectroscopy
fluorescence data
ground state
stable form
photoisomer fluorescence quantum efficiency
topic Ciencias Físicas
laser hash photolysis
laser induced optoacoustic spectroscopy
fluorescence data
ground state
stable form
photoisomer fluorescence quantum efficiency
dc.description.none.fl_txt_mv Laser Hash photolysis, laser induced optoacoustic spectroscopy (LIOAS), and fluorescence data were used for the study of the photophysical deactivation processes of excited 3,3 diethylthiadicarbocyanine iodide (DTDCI). Direct excitation of this molecule in air saturated methanol solutions at room temperature results in the formation of only one transient species, a photoisomer, the spectrum of which was derived for the 600-680 nm spectral range. The energy content difference between the ground state of the stable form and that of the photoisomer was evaluated, $latex \Delta E = 0.15 \pm 0.15 \enspace eV$, as well as limit values for the photoisomer fluorescence quantum efficiency $latex(\Phi _{f} ^{P}) < 0.2$ and for the quantum yield for the back photoisomerization from the first excited singlet state of the photoisomer to the ground state of the stable form $latex(\Phi _{PN}\leq 0.14)$.
description Laser Hash photolysis, laser induced optoacoustic spectroscopy (LIOAS), and fluorescence data were used for the study of the photophysical deactivation processes of excited 3,3 diethylthiadicarbocyanine iodide (DTDCI). Direct excitation of this molecule in air saturated methanol solutions at room temperature results in the formation of only one transient species, a photoisomer, the spectrum of which was derived for the 600-680 nm spectral range. The energy content difference between the ground state of the stable form and that of the photoisomer was evaluated, $latex \Delta E = 0.15 \pm 0.15 \enspace eV$, as well as limit values for the photoisomer fluorescence quantum efficiency $latex(\Phi _{f} ^{P}) < 0.2$ and for the quantum yield for the back photoisomerization from the first excited singlet state of the photoisomer to the ground state of the stable form $latex(\Phi _{PN}\leq 0.14)$.
publishDate 1989
dc.date.none.fl_str_mv 1989
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/submittedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str submittedVersion
dc.identifier.none.fl_str_mv https://digital.cic.gba.gob.ar/handle/11746/498
url https://digital.cic.gba.gob.ar/handle/11746/498
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv http://digital.cic.gba.gob.ar/handle/123456789/68
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Centro de Investigaciones Ópticas (CIOP)
publisher.none.fl_str_mv Centro de Investigaciones Ópticas (CIOP)
dc.source.none.fl_str_mv reponame:CIC Digital (CICBA)
instname:Comisión de Investigaciones Científicas de la Provincia de Buenos Aires
instacron:CICBA
reponame_str CIC Digital (CICBA)
collection CIC Digital (CICBA)
instname_str Comisión de Investigaciones Científicas de la Provincia de Buenos Aires
instacron_str CICBA
institution CICBA
repository.name.fl_str_mv CIC Digital (CICBA) - Comisión de Investigaciones Científicas de la Provincia de Buenos Aires
repository.mail.fl_str_mv marisa.degiusti@sedici.unlp.edu.ar
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