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Abstract:

Determination of quantum yields for various processes (such as fluorescence and triplet formation) in dye-loaded light-scattering powdered samples is an open issue. Here, we report the testing of laser-induced optoacoustic spectroscopy (LIOAS) for the determination of fluorescence quantum yields of Rhodamine 101 and Rhodamine 6G adsorbed at various loadings on microgranular cellulose powder. The results of the LIOAS experiments are consistent with those from the method developed in one of our laboratories based on the measurement of apparent reflectance using an integrating sphere [Mirenda, M.; Lagorio, M. G.; San Roman, E. Langmuir 2004,20,3690-3697], which allows the simultaneous calculation of fluorescence quantum yield and reflectance devoid of fluorescence artifacts. Criteria to quantify overall errors and detect outlying values are developed. The theory underlying the application of LIOAS to light-scattering samples and experimental details are presented. © 2009 American Chemical Society.

Registro:

Documento: Artículo
Título:Validation of fluorescence quantum yields for light-scattering powdered samples by laser-induced optoacoustic spectroscopy
Autor:Tomasini, E.P.; Román, E.S.; Braslavsky, S.E.
Filiación:INQUIMAE/DQIAyQF, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, Pab. II, C1428EHA Buenos Aires, Argentina
Max-Planck-Institut fur Bioanorganische Chemie, Postfach 101365, D 45413 Mülheim an der Ruhr, Germany
Palabras clave:Cellulose powder; Fluorescence quantum yield; Integrating spheres; Langmuir; Laser-induced optoacoustic spectroscopy; Powdered samples; Rhodamine 6G; Laser spectroscopy; Light scattering; Quantum yield; Reflection; Scattering; Fluorescence; cellulose; rhodamine; rhodamine 6G; article; chemistry; fluorescence; laser; methodology; powder; spectroscopy; Cellulose; Fluorescence; Lasers; Powders; Rhodamines; Spectrum Analysis
Año:2009
Volumen:25
Número:10
Página de inicio:5861
Página de fin:5868
DOI: http://dx.doi.org/10.1021/la803492k
Título revista:Langmuir
Título revista abreviado:Langmuir
ISSN:07437463
CODEN:LANGD
CAS:cellulose, 61991-22-8, 68073-05-2, 9004-34-6; rhodamine 6G, 989-38-8; Cellulose, 9004-34-6; Powders; Rhodamines; rhodamine 6G, 989-38-8
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07437463_v25_n10_p5861_Tomasini

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Citas:

---------- APA ----------
Tomasini, E.P., Román, E.S. & Braslavsky, S.E. (2009) . Validation of fluorescence quantum yields for light-scattering powdered samples by laser-induced optoacoustic spectroscopy. Langmuir, 25(10), 5861-5868.
http://dx.doi.org/10.1021/la803492k
---------- CHICAGO ----------
Tomasini, E.P., Román, E.S., Braslavsky, S.E. "Validation of fluorescence quantum yields for light-scattering powdered samples by laser-induced optoacoustic spectroscopy" . Langmuir 25, no. 10 (2009) : 5861-5868.
http://dx.doi.org/10.1021/la803492k
---------- MLA ----------
Tomasini, E.P., Román, E.S., Braslavsky, S.E. "Validation of fluorescence quantum yields for light-scattering powdered samples by laser-induced optoacoustic spectroscopy" . Langmuir, vol. 25, no. 10, 2009, pp. 5861-5868.
http://dx.doi.org/10.1021/la803492k
---------- VANCOUVER ----------
Tomasini, E.P., Román, E.S., Braslavsky, S.E. Validation of fluorescence quantum yields for light-scattering powdered samples by laser-induced optoacoustic spectroscopy. Langmuir. 2009;25(10):5861-5868.
http://dx.doi.org/10.1021/la803492k