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Abstract:

The photophysics of several systems composed of a single dye or pairs of dyes attached to solid particles has been studied in the dry solid state at high dye concentrations taking into account light scattering and inner filter effects. Interaction among dye molecules and singlet-singlet energy transfer are relevant in these conditions, as has been demonstrated for pairs of dyes with suitable spectral overlap. For single dyes, after correction for radiative energy transfer, fluorescence quenching is observed as the surface concentration increases. This effect is explained by two different trapping models. Irrespective of the nature of the traps, concentration quenching may be of static (trap absorption) and dynamic (energy transfer) nature. The unraveling of energy trapping mechanisms is a key to the development of efficient photoactive solid materials. © 2008 New York Academy of Sciences.

Registro:

Documento: Artículo
Título:Excitation energy transfer and trapping in dye-loaded solid particles
Autor:Rodríguez, H.B.; San Román, E.
Filiación:INQUIMAE/DQIAYQF, Facultad de Ciencias Exactas Y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina
Ciudad Universitaria, Pabellón II, C1428EHA Buenos Aires, Argentina
Palabras clave:Dye aggregation; Energy trapping; Quenching radius; Solid particles; dye; absorption; conference paper; energy transfer; energy trapping; fluorescence analysis; light scattering; molecular interaction; photochemical quenching; radiation energy; solid state
Año:2008
Volumen:1130
Página de inicio:247
Página de fin:252
DOI: http://dx.doi.org/10.1196/annals.1430.028
Título revista:Annals of the New York Academy of Sciences
Título revista abreviado:Ann. New York Acad. Sci.
ISSN:00778923
CODEN:ANYAA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00778923_v1130_n_p247_Rodriguez

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Citas:

---------- APA ----------
Rodríguez, H.B. & San Román, E. (2008) . Excitation energy transfer and trapping in dye-loaded solid particles. Annals of the New York Academy of Sciences, 1130, 247-252.
http://dx.doi.org/10.1196/annals.1430.028
---------- CHICAGO ----------
Rodríguez, H.B., San Román, E. "Excitation energy transfer and trapping in dye-loaded solid particles" . Annals of the New York Academy of Sciences 1130 (2008) : 247-252.
http://dx.doi.org/10.1196/annals.1430.028
---------- MLA ----------
Rodríguez, H.B., San Román, E. "Excitation energy transfer and trapping in dye-loaded solid particles" . Annals of the New York Academy of Sciences, vol. 1130, 2008, pp. 247-252.
http://dx.doi.org/10.1196/annals.1430.028
---------- VANCOUVER ----------
Rodríguez, H.B., San Román, E. Excitation energy transfer and trapping in dye-loaded solid particles. Ann. New York Acad. Sci. 2008;1130:247-252.
http://dx.doi.org/10.1196/annals.1430.028