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Organização supramolecular da ftalocianina de cobalto(II) e seu efeito na oxidação do aminoácido cisteína

2010; Brazilian Chemical Society; Volume: 33; Issue: 3 Linguagem: Inglês

10.1590/s0100-40422010000300009

ISSN

1678-7064

Autores

Amanda Costa Santos, Roberto A. S. Luz, Luana G. França Ferreira, José Ribeiro dos Santos Júnior, Welter Cantanhêde da Silva, Frank N. Crespilho,

Tópico(s)

Electrochemical sensors and biosensors

Resumo

COBALT (II) PHTHALOCYANINE ON THE PATHWAY OF CYSTEINE OXIDATION.The interest in the chemistry of cobalt (II) tetrasulfonated phthalocyanine (PcTsCo) comes mainly from its macrocycle-ligand structure combined with their special chemical characteristics, such as high solubility, well-defined redox reactions and remarkable optical absorption in the visible region.In this work, we use layer-by-layer technique in order to assemble CoTsPc and poly(allylaminehydrochloride) (PAH) in hybrid supramolecular system.The electronic spectroscopy and cyclic voltammetry techniques were utilized to study PAH/CoTsPc multilayers growth and the cysteine catalytic oxidation.PAH/CoTsPc showed high electrochemical stability and worthwhile to mention is the remarkable influence of supramolecular arrangement on the final redox properties of the system.

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