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Abstract:

Aluminum tricarboximonoamidephthalocyanine and Rose Bengal were immobilized by adsorption and covalent linkage to different solid supports: silica, silanized silica, silanized silica modified with polylysine chains and NovaSyn™ TG amino resin (low cross-linked polystyrene with polyethyleneglycol chains). Specially designed tools were used to evaluate absolute quantum yields in scattering media. A previously developed model was used to calculate fluorescence quantum yields in the solid state and a method is presented for the evaluation of singlet molecular oxygen quantum yields in suspensions. The method yields reliable results for dilute suspensions of particles with diameters much greater than the irradiation wavelength. Diffuse reflectance and, in the case of suspensions, total transmittance spectra are the basic inputs required. In this way the efficiencies of suspended solid photosensitizers were obtained for all samples and correlated with the dye concentration and the way of linking to the surface.

Registro:

Documento: Artículo
Título:Photophysical properties of supported dyes. Quantum yield calculations in scattering media
Autor:Amore, S.; Lagorio, M.G.; Dicelio, L.E.; San Román, E.
Filiación:Inquimae (UBA-CONICET)/Departamento de Quimica Inorganica, Analitica y Quimica Fisica, Facultad de Ciencias Exactas Y Naturales, Pabellón II, 1428 Buenos Aires, Argentina
Palabras clave:Fluorescence quantum yields; Scattering media; Singlet oxygen quantum yields; Supported dyes; Calculations; Correlation methods; Fluorescence; Light scattering; Mathematical models; Oxygen; Photochemical reactions; Quantum theory; Silica; Suspensions (fluids); Fluorescence quantum yields; Photophysical properties; Scattering media; Singlet oxygen quantum yields; Supported dyes; Dyes
Año:2001
Volumen:26
Número:2-3
Página de inicio:159
Página de fin:177
DOI: http://dx.doi.org/10.3184/007967401103165235
Título revista:Progress in Reaction Kinetics and Mechanism
Título revista abreviado:Prog. React. Kinet. Mech.
ISSN:14686783
CODEN:PRKNA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14686783_v26_n2-3_p159_Amore

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Citas:

---------- APA ----------
Amore, S., Lagorio, M.G., Dicelio, L.E. & San Román, E. (2001) . Photophysical properties of supported dyes. Quantum yield calculations in scattering media. Progress in Reaction Kinetics and Mechanism, 26(2-3), 159-177.
http://dx.doi.org/10.3184/007967401103165235
---------- CHICAGO ----------
Amore, S., Lagorio, M.G., Dicelio, L.E., San Román, E. "Photophysical properties of supported dyes. Quantum yield calculations in scattering media" . Progress in Reaction Kinetics and Mechanism 26, no. 2-3 (2001) : 159-177.
http://dx.doi.org/10.3184/007967401103165235
---------- MLA ----------
Amore, S., Lagorio, M.G., Dicelio, L.E., San Román, E. "Photophysical properties of supported dyes. Quantum yield calculations in scattering media" . Progress in Reaction Kinetics and Mechanism, vol. 26, no. 2-3, 2001, pp. 159-177.
http://dx.doi.org/10.3184/007967401103165235
---------- VANCOUVER ----------
Amore, S., Lagorio, M.G., Dicelio, L.E., San Román, E. Photophysical properties of supported dyes. Quantum yield calculations in scattering media. Prog. React. Kinet. Mech. 2001;26(2-3):159-177.
http://dx.doi.org/10.3184/007967401103165235