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Chepurnaya, I. A.; Gaman'kov, P. V.; Rodyagina, T. Yu.; Васильева, С. В.; Timonov, A. M.

doi:10.1023/a:1022888130060

Cited by 17 publications

(10 citation statements)

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“…As was established previously in [1][2][3][4][5], polymers poly[M(Schiff)] (M = Ni, Pd, and other transition metals; Schiff = four-dentate Schiff bases) are an assembly of stacks (molecular wires), which form at the expense of a donor-acceptor interaction between the ligand of one monomer fragment and the metallic center of another. The charge transfer in a polymer is realized by means of electronic exchange between neighboring metallic centers through a medium of a system of conjugated π -bonds of a ligand surrounding (redox conduction).…”

Section: Introduction and Formulation Of The Problemmentioning

confidence: 97%

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

et al. 2005

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This work is devoted to a consideration of methods of electrochemical synthesis of redox polymers poly[M(Schiff)], where "M" is Ni, or Pd and "Schiff" stands for a four-dentate Schiff base, with a controlled distribution of structural elements (stacks) over the electrode's surface for the optimization of the transport of charge-compensating ions, which is the stage that determines the charge transfer rate in the system under consideration. It is shown that the structuring of these polymers on a molecular level by means of a purposeful selection of the composition of the initial compounds and the conditions of synthesis-the potential of formation and the nature of the solvent and supporting electrolyte-makes it possible to a considerable extent accelerate the charge transfer process in the polymers and improve stability of their electrochemical characteristics.

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Section: Introduction and Formulation Of The Problemmentioning

confidence: 97%

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

et al. 2005

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“…At present, the important question of the nature of the linkage that connects starting monomers is rather disputable. Some researchers (Timonov, 1998;Brett, 2015) postulate the formation of intermolecular metal-phenyl p-stacks [17][18][19] or metal-metal bonds 20 in the starting monomers (''stacked polymer''). Many others Audebert, 1992;Hillman, 1997) postulate that this linkage is a covalent C-C bond connecting phenyl rings in monomeric fragments (classical polymer).…”

Section: Introductionmentioning

confidence: 99%

Water-stable [Ni(salen)]-type electrode material based on phenylazosubstituted salicylic aldehyde imine ligand

et al. 2017

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“…(5) gives Eq. (14). Table 2 shows that, within the experimental error, DG 0 ads ; const, and, then, DS 0 A = 3dDG 0 A /dT ; 0.…”

Section: äääääääääääáääääääääääääáäääääääáäääääääääääääääääääáääääääämentioning

confidence: 78%

Thermodynamic study of adsorption of nickel complexes with Schiff bases from acetonitrile solutions on uncharged graphite surface

et al. 2004

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Adsorption of nickel N, N-ethylenebis(salicylideneimine) complex from acetonitrile solution on expanded natural graphite powder at 2733313 K is studied.The chemistry of conducting polymers and molecular modification of electrode surfaces are thriving branches of modern chemical science. In the last decade, a number of new complexes of transition metals with Schiff bases have been synthesized [134]. These polymeric compounds demonstrate high electron conduction, stability, and electrochromic and catalytic properties [3]. The polymerization is always accompanied by adsorption of monomers on the electrode surface. However, to our knowledge, there are no published data on the adsorption of the complexes indicated. Therefore, we examined in this study the adsorption of nickel N, N-ethylenebis(salicylideneimine) complex [Ni(SalEn)] on graphite.Experimental data on adsorption of organic compounds on metal surfaces are often described by the Frumkin isotherm (1).where G and G max are the current and limiting numbers of moles of a surfactant that can be adsorbed on unit surface area (mol); a and B, attraction and adsorption constants; c org and X org , concentration (M) and mole fraction of the surfactant; and S n is the total number of moles contained in 1 l of the solution.Since the common case is that c org < 0.1 M, it may be accepted that S n is equal to the solvent concentration in the solution. It is known thatwhere DG 0 A is the standard Gibbs energy of adsorption, corresponding to the asymmetric standard state in the bulk of solution [6]. At a = 0, the Frumkin isotherm transforms to the Langmuir isotherm [7]: 1/c org = B G max /G 3 B. (3) From experimental dependences of G on c org , we can calculate the adsorption term B, and then, using Eg. (2), find the standard Gibbs energy of adsorption DG 0 A . In a previous communication [6], we suggested to calculate parameters G max , a, and B of the Frumkin isotherm using the Origin software package. If the symmetric standard state is chosen for the bulk of solution, the Frumkin isotherm should be represented as [6]: ÄÄÄÄÄÄ exp 32a ÄÄÄ = B`g org X org . Here B`= exp [3DG 0 ads /RT ] is the dimensionless parameter; DG 0 ads , standard Gibbs energy of adsorption, corresponding to the symmetric standard state; and g org , activity coefficient of the surfactant in the bulk of solution.According to [6], if c org < 0.1 M, thenwhere g E org is the activity coefficient of the surfactant at infinite dilution.The activity coefficient g E org is the characteristic of the solution, which can range from unity to 10 3 310 5 , depending on the nature of a surfactant and solvent [8]. The parameter DG 0 A in Eq. (5) depends both on the properties of the surfactant solution and on the metal3surfactant binding energy, while the parameter

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Cited by 17 publications

References 2 publications

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

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

Water-stable [Ni(salen)]-type electrode material based on phenylazosubstituted salicylic aldehyde imine ligand

Thermodynamic study of adsorption of nickel complexes with Schiff bases from acetonitrile solutions on uncharged graphite surface

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