Back isomerization from the excited state photoisomer of the laser dye 3,3' -diethyloxadicarbocyanine iodide (DODCI)

The fluorescence of the first excited state of both the normal (N) and the photoisomer (P) forms of 3,3'-diethyloxadicarbocyanine iodide (DODCI) were analyzed under steady state conditions. Argon ion laser and argon ion pumped dye laser were used for excitation. The long wavelength fluorescence...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Scaffardi, Lucía Beatriz, Bilmes, Gabriel Mario, Schinca, Daniel Carlos, Tocho, Jorge Omar
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	1987
Materias:	Física Normal forms Photoisomer forms Argon ion laser Argon ion pumped dye laser Fluorescence spectra 3,3'-diethyloxadicarbocyanine iodide (DODCI)
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/92929
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-92929
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Física Normal forms Photoisomer forms Argon ion laser Argon ion pumped dye laser Fluorescence spectra 3,3'-diethyloxadicarbocyanine iodide (DODCI)
spellingShingle	Física Normal forms Photoisomer forms Argon ion laser Argon ion pumped dye laser Fluorescence spectra 3,3'-diethyloxadicarbocyanine iodide (DODCI) Scaffardi, Lucía Beatriz Bilmes, Gabriel Mario Schinca, Daniel Carlos Tocho, Jorge Omar Back isomerization from the excited state photoisomer of the laser dye 3,3' -diethyloxadicarbocyanine iodide (DODCI)
topic_facet	Física Normal forms Photoisomer forms Argon ion laser Argon ion pumped dye laser Fluorescence spectra 3,3'-diethyloxadicarbocyanine iodide (DODCI)
description	The fluorescence of the first excited state of both the normal (N) and the photoisomer (P) forms of 3,3'-diethyloxadicarbocyanine iodide (DODCI) were analyzed under steady state conditions. Argon ion laser and argon ion pumped dye laser were used for excitation. The long wavelength fluorescence, belonging mainly to the P form, shows a similar degree of polarization as the short wavelength part arising from the N form. The fluorescence spectra of DODCI at different fluences and different wavelengths of laser excitation yielded information about the relative concentrations of the N and P forms. Photoequilibrium between the two species via the excited state of the P form is postulated. The rate constant estimated for the P★→N transition is much lower than the one expected from a model of a twisted state through which all the non-radiative transitions of the P form take place. The value is in agreement with that derived from the previous optoacoustic measurements exciting with higher fluences. The results indicate that stimulated emission and excited state absorption are not important under the conditions of the experiment.
format	Articulo Articulo
author	Scaffardi, Lucía Beatriz Bilmes, Gabriel Mario Schinca, Daniel Carlos Tocho, Jorge Omar
author_facet	Scaffardi, Lucía Beatriz Bilmes, Gabriel Mario Schinca, Daniel Carlos Tocho, Jorge Omar
author_sort	Scaffardi, Lucía Beatriz
title	Back isomerization from the excited state photoisomer of the laser dye 3,3' -diethyloxadicarbocyanine iodide (DODCI)
title_short	Back isomerization from the excited state photoisomer of the laser dye 3,3' -diethyloxadicarbocyanine iodide (DODCI)
title_full	Back isomerization from the excited state photoisomer of the laser dye 3,3' -diethyloxadicarbocyanine iodide (DODCI)
title_fullStr	Back isomerization from the excited state photoisomer of the laser dye 3,3' -diethyloxadicarbocyanine iodide (DODCI)
title_full_unstemmed	Back isomerization from the excited state photoisomer of the laser dye 3,3' -diethyloxadicarbocyanine iodide (DODCI)
title_sort	back isomerization from the excited state photoisomer of the laser dye 3,3' -diethyloxadicarbocyanine iodide (dodci)
publishDate	1987
url	http://sedici.unlp.edu.ar/handle/10915/92929
work_keys_str_mv	AT scaffardiluciabeatriz backisomerizationfromtheexcitedstatephotoisomerofthelaserdye33diethyloxadicarbocyanineiodidedodci AT bilmesgabrielmario backisomerizationfromtheexcitedstatephotoisomerofthelaserdye33diethyloxadicarbocyanineiodidedodci AT schincadanielcarlos backisomerizationfromtheexcitedstatephotoisomerofthelaserdye33diethyloxadicarbocyanineiodidedodci AT tochojorgeomar backisomerizationfromtheexcitedstatephotoisomerofthelaserdye33diethyloxadicarbocyanineiodidedodci
bdutipo_str	Repositorios
_version_	1764820491148722180

Back isomerization from the excited state photoisomer of the laser dye 3,3' -diethyloxadicarbocyanine iodide (DODCI)

Ejemplares similares