Multilayer Films Electrodes Consisted of Cashew Gum and Polyaniline Assembled by the Layer-by-Layer Technique : Electrochemical Characterization and Its Use for Dopamine Determination
Joint Authors
de Brito, Ana Cristina Facundo
Leite, Cleide Maria da Silva
Zucolotto, Valtencir
Barros, Sergio Bitencourt Araújo
dos Santos Júnior, José Ribeiro
Eiras, Carla
Source
International Journal of Analytical Chemistry
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-03-15
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
We take advantage of polyelectrolyte feature exhibited by natural cashew gum (Anacardium occidentale L.) (CG), found in northeast Brazil, to employ it in the formation of electroactive nanocomposites prepared by layer-by-layer (LbL) technique.
We used polyaniline unmodified (PANI) or modified with phosphonic acid (PA), PANI-PA as cationic polyelectrolyte.
On the other hand, the CG or polyvinyl sulfonic (PVS) acids were used as anionic polyelectrolytes.
The films were prepared with PANI or PANI-PA intercalated with CG or with PVS alternately resulting in four films with different sequences: PANI/CG PANI-PA/CG, PANI/PVS and PANI-PA/PVS, respectively.
Analysis by cyclic voltammetry (CV) of the films showed that the presence of gum increases the stability of the films in acidic medium.
The performance of the modified electrode of PANI-PA/CG was evaluated in electro analytical determination of dopamine (DA).
The tests showed great sensitivity of the film for this analyte that was detected at 10−5 mol L−1.
American Psychological Association (APA)
Barros, Sergio Bitencourt Araújo& Leite, Cleide Maria da Silva& de Brito, Ana Cristina Facundo& dos Santos Júnior, José Ribeiro& Zucolotto, Valtencir& Eiras, Carla. 2012. Multilayer Films Electrodes Consisted of Cashew Gum and Polyaniline Assembled by the Layer-by-Layer Technique : Electrochemical Characterization and Its Use for Dopamine Determination. International Journal of Analytical Chemistry،Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-508390
Modern Language Association (MLA)
Barros, Sergio Bitencourt Araújo…[et al.]. Multilayer Films Electrodes Consisted of Cashew Gum and Polyaniline Assembled by the Layer-by-Layer Technique : Electrochemical Characterization and Its Use for Dopamine Determination. International Journal of Analytical Chemistry No. 2012 (2012), pp.1-10.
https://search.emarefa.net/detail/BIM-508390
American Medical Association (AMA)
Barros, Sergio Bitencourt Araújo& Leite, Cleide Maria da Silva& de Brito, Ana Cristina Facundo& dos Santos Júnior, José Ribeiro& Zucolotto, Valtencir& Eiras, Carla. Multilayer Films Electrodes Consisted of Cashew Gum and Polyaniline Assembled by the Layer-by-Layer Technique : Electrochemical Characterization and Its Use for Dopamine Determination. International Journal of Analytical Chemistry. 2012. Vol. 2012, no. 2012, pp.1-10.
https://search.emarefa.net/detail/BIM-508390
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-508390