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Redox polymer poly-N,N′-2,3-dimethylbutane-2,3-diyl-bis(salicylideniminato)nickel: An impedance spectroscopy study

“…5) reveals the presence of a Warburg constituent in the poly-[Ni(SaltmEn)] impedance. The slopes of linear portions of these dependences are identical to within the experimental error, and extrapolating the -ImZ vs. f -1/2 curve to an infinite frequency gives -ImZ = 0, as it should be in accordance with (5).…”

“…An interpretation of these dependences notwithstanding, at high frequencies, the charge transfer is limited at either film/substrate or film/solution interface, and it is of interest, at which. Given a study of structural-chemical analogues of poly-[Ni(SaltmEn)] [5], where it was established that the diffusion coefficient for electrons considerably exceeds that for counterions, we think it to be the film/solution interface.…”

“…In the last decade, various groups were investigating these compounds by traditional electrochemical methods [4,5]; in situ spectroelectrochemical methods of UV-visible spectroscopy, FTIR spectroscopy [6][7][8][9]; in situ ellipsometry [7]; electrochemical quartz microbalances [10]; and so on. However, despite extensive research, there is still no consensus as to the structure of these polymers and their conduction mechanism.…”

Electrochemical sensor for sulfite determination based on a nanostructured copper-salen film modified electrode

“…A solution to this problem would enlarge the range of traditionally employed electrode materials, improve their selectivity, and create materials with specific desired properties [18]. There has been abundant interest in the preparation and use of 0013-4686/$ -see front matter © 2009 Elsevier Ltd. All rights reserved.…”

Structuring Redox Polymers Poly[M(Schiff)] (M = Ni, Pd; Schiff = Schiff Bases) on a Molecular Level: Methods and Results of an Investigation

“…The charge transfer rate in a polymer is defined by the slowest process-either by the motion of electrons over a stack or by the motion of charge-compensating ions in the space between stacks. As a result of investigations, which were performed previously, on the effect of the nature of substituents in a ligand surrounding and the nature of metallic centers on the properties of polymers poly[M(Schiff)] [3,[6][7][8], polymeric complexes were synthesized, which were characterized by a strong bond between fragments and a high rate of the electron transport over a stack [7,9]. In all polymers that were studied in given work the limz Corresponding author, e-mail: amtimonov@yahoo.com iting stage of the process of charge transfer is the motion of charge-compensating ions.…”