Luminescence quenching of Eu(III) carboxylates by Cu(II) in a composite polymer xerogel film

Three Eu(III) luminescent compounds were separately entrapped in a xerogel porous silica matrix and finely ground particles of it were deposited on a glass support with polyvinylacetate (PVAc) as a binder to build a thin film sensor. These 3 devices were immersed in aqueous solutions of Cu(II) and t...

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Autores principales: Barja, Beatriz Carmen, Aramendía, Pedro Francisco
Publicado: 2006
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00318655_v82_n1_p43_Barja
http://hdl.handle.net/20.500.12110/paper_00318655_v82_n1_p43_Barja
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00318655_v82_n1_p43_Barja
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spelling paper:paper_00318655_v82_n1_p43_Barja2025-07-30T17:38:32Z Luminescence quenching of Eu(III) carboxylates by Cu(II) in a composite polymer xerogel film Barja, Beatriz Carmen Aramendía, Pedro Francisco Three Eu(III) luminescent compounds were separately entrapped in a xerogel porous silica matrix and finely ground particles of it were deposited on a glass support with polyvinylacetate (PVAc) as a binder to build a thin film sensor. These 3 devices were immersed in aqueous solutions of Cu(II) and the content of this metal was evaluated by emission-quenching experiments. The sensor containing the highly luminescent antenna chelate of diethylenetriaminepentaacetic acid (dtpa) sensitized with Coumarin120 rendered the largest Stern-Volmer constant (KSV = 1-49 × 104 M-1), showing no leaching of the Eu(III) complex to the aqueous solution and a reproducible value of the luminescence ratio between water and Cu(II) solution. The in situ sensor we developed can measure the concentration of Cu(II) in aqueous media down to the ppm level by emission-quenching experiments. This methodology permits a simple calibration of the sensor and an easy to use reusable device. © 2006 American Society for Photobiology. Fil:Barja, B.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Aramendía, P.F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2006 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00318655_v82_n1_p43_Barja http://hdl.handle.net/20.500.12110/paper_00318655_v82_n1_p43_Barja
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description Three Eu(III) luminescent compounds were separately entrapped in a xerogel porous silica matrix and finely ground particles of it were deposited on a glass support with polyvinylacetate (PVAc) as a binder to build a thin film sensor. These 3 devices were immersed in aqueous solutions of Cu(II) and the content of this metal was evaluated by emission-quenching experiments. The sensor containing the highly luminescent antenna chelate of diethylenetriaminepentaacetic acid (dtpa) sensitized with Coumarin120 rendered the largest Stern-Volmer constant (KSV = 1-49 × 104 M-1), showing no leaching of the Eu(III) complex to the aqueous solution and a reproducible value of the luminescence ratio between water and Cu(II) solution. The in situ sensor we developed can measure the concentration of Cu(II) in aqueous media down to the ppm level by emission-quenching experiments. This methodology permits a simple calibration of the sensor and an easy to use reusable device. © 2006 American Society for Photobiology.
author Barja, Beatriz Carmen
Aramendía, Pedro Francisco
spellingShingle Barja, Beatriz Carmen
Aramendía, Pedro Francisco
Luminescence quenching of Eu(III) carboxylates by Cu(II) in a composite polymer xerogel film
author_facet Barja, Beatriz Carmen
Aramendía, Pedro Francisco
author_sort Barja, Beatriz Carmen
title Luminescence quenching of Eu(III) carboxylates by Cu(II) in a composite polymer xerogel film
title_short Luminescence quenching of Eu(III) carboxylates by Cu(II) in a composite polymer xerogel film
title_full Luminescence quenching of Eu(III) carboxylates by Cu(II) in a composite polymer xerogel film
title_fullStr Luminescence quenching of Eu(III) carboxylates by Cu(II) in a composite polymer xerogel film
title_full_unstemmed Luminescence quenching of Eu(III) carboxylates by Cu(II) in a composite polymer xerogel film
title_sort luminescence quenching of eu(iii) carboxylates by cu(ii) in a composite polymer xerogel film
publishDate 2006
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00318655_v82_n1_p43_Barja
http://hdl.handle.net/20.500.12110/paper_00318655_v82_n1_p43_Barja
work_keys_str_mv AT barjabeatrizcarmen luminescencequenchingofeuiiicarboxylatesbycuiiinacompositepolymerxerogelfilm
AT aramendiapedrofrancisco luminescencequenchingofeuiiicarboxylatesbycuiiinacompositepolymerxerogelfilm
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