Electropolymerization using binuclear nickel(II) Schiff base complexes bearing N4O4 donors as supramolecular building blocks

Autor(es)

Martin, Cibely S. ^[1] ; Machini, Wesley B. S. ^[1] ; Teixeira, Marcos F. S. ^[1]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ, Fac Sci & Technol, BR-19060900 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: RSC ADVANCES; v. 5, n. 50, p. 39908-39915, 2015.
• Citações Web of Science: 8

Resumo

The supramolecular building blocks from a nickel(II) bisalphen-type complex have been reported. The conjugations through the bridge provide flexibility of the monomer in the electropolymerization stage. Thus, different structures can be obtained with the variation of electrochemical parameters used in the electropolymerization. The structural characterization and the electrochemical behavior in aqueous solution was also evaluated, which demonstrated that the electropolymerization mechanism was similar to that observed for the classical salen polymers, but the molecular organization onto the conductor substrate was different. The supramolecular structure of the polymeric film allows observation of the Ni-I/Ni-II and Ni-II/Ni-III redox couples by differential pulse voltammetry. Thus, the comproportionation constant and Gibbs energy were calculated for the Ni-I/Ni-II redox couple. These characteristics make these polymers versatile materials in the field of supramolecular chemistry and materials science, in particular in applications as sensors, in electrocatalysts and for energy storage. (AU)

• Processo FAPESP: 13/10469-6 - Aplicação eletroanalítica de complexo biomimetizador de manganês(IV) contendo ligante 2,3,5,6-tetraquis(2-piridil)pirazina
• Beneficiário: Wesley Bruno da Silva Machini
• Linha de fomento: Bolsas no Brasil - Mestrado
• Processo FAPESP: 10/12524-6 - Estudo e caracterização da eletropolimerização de moléculas nanoestruturadas a base de schiff.
• Beneficiário: Cibely da Silva Martin Sonvesso
• Linha de fomento: Bolsas no Brasil - Mestrado