Artículo
Luminescent Eu(III) hybrid sensors for in situ copper detection
Barja, Beatriz Carmen
; Bari, Sara Elizabeth
; Marchi, María Claudia
; Iglesias, Fabricio L.; Bernardi, Milagros
Fecha de publicación:
06/2011
Editorial:
Elsevier Science Sa
Revista:
Sensors and Actuators B: Chemical
ISSN:
0925-4005
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
In this work we used the sol-gel technique to develop luminescent Eu(III) transparent films deposited on glass slides to build for sensor devices capable of monitoring transition metal ions in aqueous solutions. The films were obtained from a bis(trialkoxysilyl) organic precursor synthesized from the amide of the 2,6-pyridinedicarboxylic acid (DPA) with aminopropyltriethoxysilane (APTES) in the presence or absence of cetyl trimethyl ammonium bromide (CTAB) surfactant as templating agent and triethylethoxysilane (TEOS) as crosslinker. These sensor devices were used to perform in situ quenching experiments by Cu(II), Fe(III), Co(II) and Ni(II) ions. The results indicate that the templated films allow the detection and quantification of these metals down to ppb levels by means of the values of the Stern-Volmer constants. In particular, it was shown that Cu(II) acts as an extremely efficient quencher (KSV = 3.5 × 105 M-1) when compared with the results obtained for the other metals, opening the possibility to use these devices as potential Cu(II) sensors for actual applications in aqueous media. © 2011 Elsevier B.V. Al rights reserved.
Palabras clave:
Cu(Ii) Sensor
,
Europium(Iii)
,
Hybrid Materials
,
Luminescence Quenching
,
Sol-Gel
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(IFIBA)
Articulos de INST.DE FISICA DE BUENOS AIRES
Articulos de INST.DE FISICA DE BUENOS AIRES
Citación
Barja, Beatriz Carmen; Bari, Sara Elizabeth; Marchi, María Claudia; Iglesias, Fabricio L.; Bernardi, Milagros; Luminescent Eu(III) hybrid sensors for in situ copper detection; Elsevier Science Sa; Sensors and Actuators B: Chemical; 158; 1; 6-2011; 214-222
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