Photophysical Processes of Polymethine Dyes : An Absorption, Emission, and Optoacoustic Study on 3,3'-Diethylthladicarbocyanine Iodide
- Autores
- Bilmes, Gabriel Mario; Tocho, Jorge Omar; Braslavsky, Silvia E.
- Año de publicación
- 1989
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- 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, ΔE=0.15±0.15eV, as well as limit values for the photoisomer fluorescence quantum efficiency (ΦPf)<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 (ΦPN≤0.14).
Centro de Investigaciones Ópticas - Materia
-
Física
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-nc-sa/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/92925
Ver los metadatos del registro completo
id |
SEDICI_cd3892882a525ef1b62ec4c4da162623 |
---|---|
oai_identifier_str |
oai:sedici.unlp.edu.ar:10915/92925 |
network_acronym_str |
SEDICI |
repository_id_str |
1329 |
network_name_str |
SEDICI (UNLP) |
spelling |
Photophysical Processes of Polymethine Dyes : An Absorption, Emission, and Optoacoustic Study on 3,3'-Diethylthladicarbocyanine IodideBilmes, Gabriel MarioTocho, Jorge OmarBraslavsky, Silvia E.FísicaLaser 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, ΔE=0.15±0.15eV, as well as limit values for the photoisomer fluorescence quantum efficiency (ΦPf)<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 (ΦPN≤0.14).Centro de Investigaciones Ópticas1989info: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/10915/92925enginfo:eu-repo/semantics/altIdentifier/issn/0022-365info:eu-repo/semantics/altIdentifier/hdl/11746/498info: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:UNLP2025-09-29T11:19:16Zoai:sedici.unlp.edu.ar:10915/92925Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:19:17.18SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
Photophysical Processes of Polymethine Dyes : An Absorption, Emission, and Optoacoustic Study on 3,3'-Diethylthladicarbocyanine Iodide |
title |
Photophysical Processes of Polymethine Dyes : An Absorption, Emission, and Optoacoustic Study on 3,3'-Diethylthladicarbocyanine Iodide |
spellingShingle |
Photophysical Processes of Polymethine Dyes : An Absorption, Emission, and Optoacoustic Study on 3,3'-Diethylthladicarbocyanine Iodide Bilmes, Gabriel Mario Física Laser hash photolysis Laser induced optoacoustic spectroscopy Fluorescence data Ground state Stable form Photoisomer fluorescence quantum efficiency |
title_short |
Photophysical Processes of Polymethine Dyes : An Absorption, Emission, and Optoacoustic Study on 3,3'-Diethylthladicarbocyanine Iodide |
title_full |
Photophysical Processes of Polymethine Dyes : An Absorption, Emission, and Optoacoustic Study on 3,3'-Diethylthladicarbocyanine Iodide |
title_fullStr |
Photophysical Processes of Polymethine Dyes : An Absorption, Emission, and Optoacoustic Study on 3,3'-Diethylthladicarbocyanine Iodide |
title_full_unstemmed |
Photophysical Processes of Polymethine Dyes : An Absorption, Emission, and Optoacoustic Study on 3,3'-Diethylthladicarbocyanine Iodide |
title_sort |
Photophysical Processes of Polymethine Dyes : An Absorption, Emission, and Optoacoustic Study on 3,3'-Diethylthladicarbocyanine Iodide |
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 |
Física Laser hash photolysis Laser induced optoacoustic spectroscopy Fluorescence data Ground state Stable form Photoisomer fluorescence quantum efficiency |
topic |
Física 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, ΔE=0.15±0.15eV, as well as limit values for the photoisomer fluorescence quantum efficiency (ΦPf)<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 (ΦPN≤0.14). Centro de Investigaciones Ópticas |
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, ΔE=0.15±0.15eV, as well as limit values for the photoisomer fluorescence quantum efficiency (ΦPf)<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 (ΦPN≤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/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/10915/92925 |
url |
http://sedici.unlp.edu.ar/handle/10915/92925 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/issn/0022-365 info:eu-repo/semantics/altIdentifier/hdl/11746/498 |
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 |
_version_ |
1844616066376925184 |
score |
13.070432 |