Study and Optimization of Self-Assembled Polymeric Multilayer Structures with Neutral Red for pH Sensing Applications
The characterization of nanostructured thin films is critical in the design and fabrication of optical sensors. Particularly, this work is a detailed study of the properties of layer-by-layer electrostatic self-assembled multilayer (LbL) structures fabricated using poly(allylamine hydrochloride) (PA...
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doaj-01e6a7b044be4b3fb6706b994a37d9692020-11-24T22:59:41ZengHindawi LimitedJournal of Sensors1687-725X1687-72682008-01-01200810.1155/2008/142854142854Study and Optimization of Self-Assembled Polymeric Multilayer Structures with Neutral Red for pH Sensing ApplicationsJavier Goicoechea0Francisco J. Arregui1Jesus M. Corres2Ignacio R. Matias3Departamento de Ingeniería Eléctrica y Electrónica, Universidad Publica de Navarra, Campus Arrosadia, Pamplona 31006, SpainDepartamento de Ingeniería Eléctrica y Electrónica, Universidad Publica de Navarra, Campus Arrosadia, Pamplona 31006, SpainDepartamento de Ingeniería Eléctrica y Electrónica, Universidad Publica de Navarra, Campus Arrosadia, Pamplona 31006, SpainDepartamento de Ingeniería Eléctrica y Electrónica, Universidad Publica de Navarra, Campus Arrosadia, Pamplona 31006, SpainThe characterization of nanostructured thin films is critical in the design and fabrication of optical sensors. Particularly, this work is a detailed study of the properties of layer-by-layer electrostatic self-assembled multilayer (LbL) structures fabricated using poly(allylamine hydrochloride) (PAH) and Neutral Red (NR) as cations, and poly(acrylic acid) (PAA) as polyanion. These LbL films, due to the colorimetric properties of the NR, are suitable for sensor applications such as pH sensing in the physiological range. In the (PAH+NR/PAA) LbL structure, it has been observed a very important influence of the pH of the solutions in the properties of the resultant films. Different techniques such as spectroscopy and atomic force microscopy (AFM) are combined to characterize the films, and the results are analyzed showing coherence with previous works. The LbL structure is finally optimized and dramatically improved nanostructured films were fabricated, showing good sensing properties, short response times, and good stability.http://dx.doi.org/10.1155/2008/142854 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Javier Goicoechea Francisco J. Arregui Jesus M. Corres Ignacio R. Matias |
spellingShingle |
Javier Goicoechea Francisco J. Arregui Jesus M. Corres Ignacio R. Matias Study and Optimization of Self-Assembled Polymeric Multilayer Structures with Neutral Red for pH Sensing Applications Journal of Sensors |
author_facet |
Javier Goicoechea Francisco J. Arregui Jesus M. Corres Ignacio R. Matias |
author_sort |
Javier Goicoechea |
title |
Study and Optimization of Self-Assembled Polymeric Multilayer Structures with Neutral Red for pH Sensing Applications |
title_short |
Study and Optimization of Self-Assembled Polymeric Multilayer Structures with Neutral Red for pH Sensing Applications |
title_full |
Study and Optimization of Self-Assembled Polymeric Multilayer Structures with Neutral Red for pH Sensing Applications |
title_fullStr |
Study and Optimization of Self-Assembled Polymeric Multilayer Structures with Neutral Red for pH Sensing Applications |
title_full_unstemmed |
Study and Optimization of Self-Assembled Polymeric Multilayer Structures with Neutral Red for pH Sensing Applications |
title_sort |
study and optimization of self-assembled polymeric multilayer structures with neutral red for ph sensing applications |
publisher |
Hindawi Limited |
series |
Journal of Sensors |
issn |
1687-725X 1687-7268 |
publishDate |
2008-01-01 |
description |
The characterization of nanostructured thin films is critical in the design and fabrication of optical sensors. Particularly, this work is a detailed study of the properties of layer-by-layer electrostatic self-assembled multilayer (LbL) structures fabricated using poly(allylamine hydrochloride) (PAH) and Neutral Red (NR) as cations, and poly(acrylic acid) (PAA) as polyanion. These LbL films, due to the colorimetric properties of the NR, are suitable for sensor applications such as pH sensing in the physiological range. In the (PAH+NR/PAA) LbL structure, it has been observed a very important influence of the pH of the solutions in the properties of the resultant films. Different techniques such as spectroscopy and atomic force microscopy (AFM) are combined to characterize the films, and the results are analyzed showing coherence with previous works. The LbL structure is finally optimized and dramatically improved nanostructured films were fabricated, showing good sensing properties, short response times, and good stability. |
url |
http://dx.doi.org/10.1155/2008/142854 |
work_keys_str_mv |
AT javiergoicoechea studyandoptimizationofselfassembledpolymericmultilayerstructureswithneutralredforphsensingapplications AT franciscojarregui studyandoptimizationofselfassembledpolymericmultilayerstructureswithneutralredforphsensingapplications AT jesusmcorres studyandoptimizationofselfassembledpolymericmultilayerstructureswithneutralredforphsensingapplications AT ignaciormatias studyandoptimizationofselfassembledpolymericmultilayerstructureswithneutralredforphsensingapplications |
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