Controlled fabrication of multilayered 4-(pyrrole-1-yl) benzoate supported poly(3,4-ethylenedioxythiophene) linked hybrid films of Prussian blue type nickel hexacyanoferrate

Autor: Dorota Szymanska, Marcin A. Malik, Barbara Palys, Jadwiga Stroka, Krzysztof Miecznikowski, Pawel J. Kulesza, Oktawian Makowski, Barbara Kowalewska
Rok vydání: 2007
Předmět:
Zdroj: Electrochimica Acta. 53:1235-1243
ISSN: 0013-4686
DOI: 10.1016/j.electacta.2007.02.083
Popis: The ability of 4-(pyrrole-1-yl) benzoic acid (PyBA) to form monolayer-type carboxylate-derivatized ultra-thin organic films on solid electrode surfaces was explored here to attract coordinatively and immobilize N1 2+ ions at the electrode/electrolyte interface. In the next step, the system was exposed to Fe(CN) 6 3- or Fe(CN) 6 4- solution to form a robust nickel hexacyanoferrate (NiHCF) layer. By repeated and alternate treatments in solutions of PyBA, N1 2+ cations, and Fe(CN) 6 3- or Fe(CN) 6 4- anions, the amount of the material could be increased systematically in a controlled fashion to form three-dimensional multilayered NiHCF-based assemblies. The layer-by-layer method was also extended to the growth of hybrid conducting polymer stabilized NiHCF films in which the initial PyBA-anchored NiHCF layer (formed on glassy carbon) was subsequently exposed (a desired number of times) through alternate immersions to the monomer (3,4-ethylenedioxythiophene), Fe(CN) 6 3- and N1 2+ solutions. During voltammetric potential cycling (electropolymerization) in the external supporting electrolyte solution, poly(3,4-ethylenedioxythiophene) or PEDOT linked NiHCF-based multilayered films were produced. They were characterized by good stability and high dynamics of charge transport.
Databáze: OpenAIRE
Externí odkaz: