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Abstract:

New fluorinated biarsenical derivatives with improved optical properties based on highly photostable analogs of fluorescein were recently introduced. The photophysical parameters of the triplet excited states as well as photosensitized oxidation reactions of these dyes were determined in order to investigate the influence of molecular structure on the exceptional photostability of these fluorophores. The lack of correspondence between triplet quantum yields and lifetimes with the photobleaching rates of some of the fluorophores of the series suggests that differential reactivities of the excited states with ground state oxygen accounts for the different photodegradation resistances. The UV-visible absorption and emission spectra of the fluorinated fluoresceins and their biarsenical derivatives were evaluated using a TD-DFT/BP86/6-31G** approach, taking bulk solvent effects into account by means of the polarizable continuum model. The calculated properties are in good agreement with experimental data. The S 0→S1 vertical excitation energies in the gas phase and in water were obtained with the optimized geometries of the excited states. This type of calculation could be used in the rational design of new dyes. © 2009 The American Society of Photobiology.

Registro:

Documento: Artículo
Título:Photostability and spectral properties of fluorinated fluoresceins and their biarsenical derivatives: A combined experimental and theoretical study
Autor:Spagnuolo, C.C.; Massad, W.; Miskoski, S.; Menendez, G.O.; García, N.A.; Jares-Erijman, E.A.
Filiación:Departamento de Química Orgánica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional de Río Cuarto, Río Cuarto, Argentina
Año:2009
Volumen:85
Número:5
Página de inicio:1082
Página de fin:1088
DOI: http://dx.doi.org/10.1111/j.1751-1097.2009.00565.x
Título revista:Photochemistry and Photobiology
Título revista abreviado:Photochem. Photobiol.
ISSN:00318655
CODEN:PHCBA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00318655_v85_n5_p1082_Spagnuolo

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Citas:

---------- APA ----------
Spagnuolo, C.C., Massad, W., Miskoski, S., Menendez, G.O., García, N.A. & Jares-Erijman, E.A. (2009) . Photostability and spectral properties of fluorinated fluoresceins and their biarsenical derivatives: A combined experimental and theoretical study. Photochemistry and Photobiology, 85(5), 1082-1088.
http://dx.doi.org/10.1111/j.1751-1097.2009.00565.x
---------- CHICAGO ----------
Spagnuolo, C.C., Massad, W., Miskoski, S., Menendez, G.O., García, N.A., Jares-Erijman, E.A. "Photostability and spectral properties of fluorinated fluoresceins and their biarsenical derivatives: A combined experimental and theoretical study" . Photochemistry and Photobiology 85, no. 5 (2009) : 1082-1088.
http://dx.doi.org/10.1111/j.1751-1097.2009.00565.x
---------- MLA ----------
Spagnuolo, C.C., Massad, W., Miskoski, S., Menendez, G.O., García, N.A., Jares-Erijman, E.A. "Photostability and spectral properties of fluorinated fluoresceins and their biarsenical derivatives: A combined experimental and theoretical study" . Photochemistry and Photobiology, vol. 85, no. 5, 2009, pp. 1082-1088.
http://dx.doi.org/10.1111/j.1751-1097.2009.00565.x
---------- VANCOUVER ----------
Spagnuolo, C.C., Massad, W., Miskoski, S., Menendez, G.O., García, N.A., Jares-Erijman, E.A. Photostability and spectral properties of fluorinated fluoresceins and their biarsenical derivatives: A combined experimental and theoretical study. Photochem. Photobiol. 2009;85(5):1082-1088.
http://dx.doi.org/10.1111/j.1751-1097.2009.00565.x