Artículo

Thionine immobilized in crosslinked chitosan films

Gerbino, Leandro JulianIcon ; Riva, Julieta SoledadIcon ; Strumia, Miriam CristinaIcon ; Iglesias, Rodrigo AlejandroIcon ; Baruzzi, Ana MariaIcon
Fecha de publicación: 12/2008
Editorial: Elsevier Science Sa
Revista: Sensors and Actuators B: Chemical
ISSN: 0925-4005
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:

Resumen

Experimental conditions for the preparation of cross-linked chitosan films embedded with Thionine are described. The main redox and acid-base properties of the immobilized dye are analyzed in terms of results obtained with voltammetry, spectroelectrochemistry and spectrophotometry. An acid dissociation constant for the immobilized dye of 2,7x10-11 was obtained and Thionine retains its redox and acid base activity even when it is immobilized inside the polymer layer. Due to the stable and reversible pH dependent optical signal of the studied film, this membrane can be used as a building component of an optical pH sensor.
Palabras clave: Thionine , Chitosan , Electrochemistry , Films
 
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/29564
URL: http://www.sciencedirect.com/science/article/pii/S0925400507010040?via%3Dihub
DOI: http://dx.doi.org/10.1016/j.snb.2007.12.006
Colecciones
Articulos(IMBIV)
Articulos de INST.MULTIDISCIPL.DE BIOLOGIA VEGETAL (P)
Articulos(INFIQC)
Articulos de INST.DE INVESTIGACIONES EN FISICO- QUIMICA DE CORDOBA
Citación
Gerbino, Leandro Julian; Riva, Julieta Soledad; Strumia, Miriam Cristina; Iglesias, Rodrigo Alejandro; Baruzzi, Ana Maria; Thionine immobilized in crosslinked chitosan films; Elsevier Science Sa; Sensors and Actuators B: Chemical; 131; 2; 12-2008; 455-461
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