Photophysical properties of supported dyes. Quantum yield calculations in scattering media

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 cha...

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Detalles Bibliográficos
Autores principales:	Amore, S., Lagorio, M.G., Dicelio, L.E., San Román, E.
Formato:	JOUR
Materias:	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) Photophysical properties Dyes
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_14686783_v26_n2-3_p159_Amore
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_14686783_v26_n2-3_p159_Amore
record_format	dspace
spelling	todo:paper_14686783_v26_n2-3_p159_Amore2023-10-03T16:17:28Z Photophysical properties of supported dyes. Quantum yield calculations in scattering media Amore, S. Lagorio, M.G. Dicelio, L.E. San Román, E. 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 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. Fil:Lagorio, M.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Dicelio, L.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:San Román, E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_14686783_v26_n2-3_p159_Amore
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	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
spellingShingle	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 Amore, S. Lagorio, M.G. Dicelio, L.E. San Román, E. Photophysical properties of supported dyes. Quantum yield calculations in scattering media
topic_facet	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
description	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.
format	JOUR
author	Amore, S. Lagorio, M.G. Dicelio, L.E. San Román, E.
author_facet	Amore, S. Lagorio, M.G. Dicelio, L.E. San Román, E.
author_sort	Amore, S.
title	Photophysical properties of supported dyes. Quantum yield calculations in scattering media
title_short	Photophysical properties of supported dyes. Quantum yield calculations in scattering media
title_full	Photophysical properties of supported dyes. Quantum yield calculations in scattering media
title_fullStr	Photophysical properties of supported dyes. Quantum yield calculations in scattering media
title_full_unstemmed	Photophysical properties of supported dyes. Quantum yield calculations in scattering media
title_sort	photophysical properties of supported dyes. quantum yield calculations in scattering media
url	http://hdl.handle.net/20.500.12110/paper_14686783_v26_n2-3_p159_Amore
work_keys_str_mv	AT amores photophysicalpropertiesofsupporteddyesquantumyieldcalculationsinscatteringmedia AT lagoriomg photophysicalpropertiesofsupporteddyesquantumyieldcalculationsinscatteringmedia AT diceliole photophysicalpropertiesofsupporteddyesquantumyieldcalculationsinscatteringmedia AT sanromane photophysicalpropertiesofsupporteddyesquantumyieldcalculationsinscatteringmedia
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Photophysical properties of supported dyes. Quantum yield calculations in scattering media

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