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Laye by Layer films of montmorillonite clay and phthalocyanine for detecting dopamine

Grant number: 14/12937-0
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): October 01, 2014
Effective date (End): March 31, 2016
Field of knowledge:Engineering - Materials and Metallurgical Engineering - Nonmetallic Materials
Principal researcher:Marystela Ferreira
Grantee:Nathália Cozza de Lucena
Home Institution: Centro de Ciências e Tecnologias para a Sustentabilidade (CCTS). Universidade Federal de São Carlos (UFSCAR). Sorocaba , SP, Brazil


Using technique layer by layer (LbL) will be manufactured nanostructured films consisting of trilayer formed montmorillonite clay (polyanion), PEI (polyethyleneimine) (polycation) and sulfonated metal phthalocyanine (polyanion). The films are deposited on solid substrates (quartz, silicon and ITO), via physical adsorption by electrostatic attraction. The nanocomposite material is characterized by spectroscopic techniques such as UV-Vis and FTIR; electrochemical (cyclic voltammetry, square wave voltammetry). In this project we aim at the application of these films in sensors of dopamine and its intervening determining the analytical parameters such as sensitivity and detection limit. The best conditions for the production of films (architecture, number of bilayers, analytic concentration, temperature, etc.) will be investigated in order to obtain the best sensor.

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