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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Layer-by-layer composite film of nickel phthalocyanine and montmorillonite clay for synergistic effect on electrochemical detection of dopamine

Full text
Author(s):
de Lucena, Nathalia C. [1] ; Miyazaki, Celina M. [1] ; Shimizu, Flavio M. [2] ; Constantino, Carlos J. L. [3] ; Ferreira, Marystela [1]
Total Authors: 5
Affiliation:
[1] Univ Fed Sao Carlos, Sorocaba, SP - Brazil
[2] Univ Sao Paulo, Sao Carlos, SP - Brazil
[3] Univ Estadual Paulista, FCT, Presidente Prudente, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Applied Surface Science; v. 436, p. 957-966, APR 1 2018.
Web of Science Citations: 10
Abstract

Dopamine (DA) abnormal levels are related to diseases which makes important the development of fast, reliable, low-cost and sensitive devices for diagnosis and pharmaceutical controls. Nanostructured film composite of sodium montmorillonite clay (Na+MMT) and nickel phthalocyanine (NiTsPc) was selfassembled by layer-by-layer (LbL) technique and applied as electrochemical sensor for DA in the presence of common natural interferents as ascorbic acid (AA) and uric acid (UA). Three different LbL architecture films were investigated: LbL films of clay (PEI/Na+MMT) and phthalocyanine (PEI/NiTsPc) in a bilayer structure with a conventional polyelectrolyte (PEI) and a composite film formed by both materials to verify the synergistic effect in the LbL film in a quadri-layer assembly (PEI/Na+MMT/PEI/NiTsPc). Structural characterization indicated molecular level interactions between the layers forming the LbL films. The ITO/(PEI/Na+MMT/PEI/NiTsPc)(10) electrode exhibited a LOD of 1.0 mu mol L-1 and linear range 5-150 mu mol L-1. (C) 2017 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 14/15093-7 - Study of nanostructured systems by surface plasmon resonance (SPR): applications in biosensing
Grantee:Celina Massumi Miyazaki
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 13/14262-7 - Nanostructured films from biologically-relevant materials
Grantee:Osvaldo Novais de Oliveira Junior
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 12/15543-7 - Biosensors to detect Escherichia coli using the concept of an extended electronic tongue
Grantee:FLAVIO MAKOTO SHIMIZU
Support Opportunities: Scholarships in Brazil - Post-Doctoral