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

• Published in: Electrochimica acta Vol. 53; no. 3; pp. 1235 - 1243
• Main Authors: Makowski, Oktawian, Kowalewska, Barbara, Szymanska, Dorota, Stroka, Jadwiga, Miecznikowski, Krzysztof, Palys, Barbara, Malik, Marcin A., Kulesza, Pawel J.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Oxford Elsevier Ltd 20-12-2007; Elsevier
• Subjects: 4-(Pyrrole-1-yl) benzoic acid template; Chemistry; Composite films; Electrochemistry; Electrodes: preparations and properties; Exact sciences and technology; General and physical chemistry; Layer-by-layer growth; Nickel hexacyanoferrate; Other electrodes; Poly(3,4-ethylenedioxythiophene) inter-layers; Layer-by-layer growth; Nickel hexacyanoferrate; 4-(Pyrrole-1-yl) benzoic acid template; Poly(3,4-ethylenedioxythiophene) inter-layers; Composite films; Self-assembled layer; Scanning electron microscopy; Nickel Hexacyanoferrates; Carbon; Composite material; Pyrrole derivatives; Surface structure; Electrodes; Conducting polymers; Thiophene derivative polymer; Mixed multilayer; Morphology; Preparation; Glassy state
• ISSN: 0013-4686; 1873-3859
• DOI: 10.1016/j.electacta.2007.02.083

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 Ni
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, Ni
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 Ni
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.