Electrochemical transformations of polymers formed from nickel (II) complexes with salen-type ligands in aqueous alkaline electrolytes

Kuznetsov, Nikita; Yang, Peixia; Gorislov, Georgy; Zhukov, Yu. M.; Bocharov, Vladimir N.; Malev, V. V.; Levin, Oleg V.

doi:10.1016/j.electacta.2018.03.042

Cited by 19 publications

(11 citation statements)

References 62 publications

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“…Recently, Kuznetsov and collaborators studied electrochemical transformation of polymers based on nickel‐salen in alkaline medium and in which they affirm the formation of nickel hydroxide thin film deposited on the surface electrode. Synthesis of the metallopolymer was carried out by potentiostatic electropolymerization at constant potential with cut‐off of the charge passed.…”

Section: Resultscontrasting

confidence: 99%

“…An isopotential point was observed in the RDE measurements, revealing that the electrode surface may be considered to consist of two independent electrochemical regions: one corresponding to the ethanol electro‐oxidation by nickel(IV) and the second corresponding to the electrocatalytic property for the oxygen evolution reaction. The results are different from the articles with studies of nickel Schiff base complexes,,, where nickel(IV) generation was not observed or identified.…”

Section: Discussionmentioning

confidence: 99%

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Electrocatalytic Study of the Thin Metallopolymer Film of [2,2′‐{1,2‐Ethanediylbis[Nitrilo(1E)‐1‐Ethyl‐1‐Ylidene]}Diphenolate]‐Nickel(II) for Ethanol Electrooxidation

et al. 2018

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The present paper describes the electrochemical activity of a Ni(II)‐Schiff base metallopolymer electrode for the oxidation of ethanol in alkaline media. The scanning electron microscope results show that the metallopolymer at the glassy carbon surface has a nanoflake‐like lamellar structure, and there is no molecular structural change after treatment with NaOH. Voltammetry measurements indicate that the metallopolymer acts as efficient material for the electrocatalytic oxidation of ethanol, where a high‐valent nickel(IV) was revealed as the reactive intermediate during the anodic scan. An isopotential point can be observed in rotating disk electrode voltammetry for ethanol oxidation. The electrode surface may be considered to consist of two independent electrochemical regions, one corresponding to the ethanol electro‐oxidation by nickel(IV) and the second corresponding to water oxidation. The Tafel slopes were found to be 246 mV dec−1 at low overpotentials and 44 mV dec−1 at high overpotentials, which suggest that the first electron transfer step is the rate controlling step. The specific activity of the metallopolymer‐modified electrode for the ethanol electro‐oxidation reaction was 6.66 mA cm−2 for 0.130 μmol cm−2 of electroactive species of metallopolymer at 0.6 V vs. SCE.

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Section: Resultscontrasting

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Electrocatalytic Study of the Thin Metallopolymer Film of [2,2′‐{1,2‐Ethanediylbis[Nitrilo(1E)‐1‐Ethyl‐1‐Ylidene]}Diphenolate]‐Nickel(II) for Ethanol Electrooxidation

et al. 2018

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“…The relative ease of obtaining such electrodes allows their use as sensors, e.g., dipyrone [ 13 ], barium ions [ 14 ], nitric oxide [ 15 ] and BrO 3 − , IO 3 − , IO 4 − anions [ 16 ], furosemide [ 17 ] and oxygen [ 18 ]. They also play the role of potential materials in energy storage devices [ 19 , 20 , 21 , 22 , 23 , 24 , 25 ].…”

Section: Introductionmentioning

confidence: 99%

Electrocatalytic Properties of Ni(II) Schiff Base Complex Polymer Films

et al. 2021

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Platinum electrodes were modified with polymers of the (±)-trans-N,N′-bis(salicylidene)-1,2-cyclohexanediaminenickel(II) ([Ni(salcn)]) and (±)-trans-N,N′-bis(3,3′-tert-Bu-salicylidene)-1,2-cyclohexanediaminenickel(II) ([Ni(salcn(Bu))]) complexes to study their electrocatalytic and electroanalytical properties. Poly[Ni(salcn)] and poly[Ni(salcn(Bu))]) modified electrodes catalyze the oxidation of catechol, aspartic acid and NO2−. In the case of poly[Ni(salcn)] modified electrodes, the electrocatalysis process depends on the electroactive surface coverage. The films with low electroactive surface coverage are only a barrier in the path of the reducer to the electrode surface. The films with more electroactive surface coverage ensure both electrocatalysis inside the film and oxidation of the reducer directly on the electrode surface. In the films with the most electroactive surface coverage, electrocatalysis occurs only at the polymer–solution interface. The analysis was based on cyclic voltammetry, EQCM (electrochemical quartz crystal microbalance) and rotating disc electrode method.

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“…Salen‐like compounds and their analogues (R–CH=N–(CH 2 ) n –N=CH–R) as a class of significant Schiff bases have been extensively applied in metal organic chemistry and coordination chemistry, and their complexes with transition metal ions have attracted much attentions . These complexes not only have unique structures, but also have many interesting properties, such as organic reaction catalysts, magnetic materials, electrochemistry fields, supramolecular architectures, luminescent properties, ion recognitions, biological antimicrobial activities and so on.…”

Section: Introductionmentioning

confidence: 99%

Newly synthesized homomultinuclear Co (II) and Cu (II) bissalamo‐like complexes: Structural characterizations, Hirshfeld analyses, fluorescence and antibacterial properties

Pan

Zhang

et al. 2020

Applied Organom Chemis

104

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Rare homodinuclear Co (II) complex [Co2(L)NO3] (1) and helical centrosymmetric homotetranuclear Cu (II) complex [Cu4(L)2(H2O)2]·2ClO4 (2), have been synthesized by a newly explored bis (salamo)‐like tetraoxime ligand (H3L) with Co (NO3)2·6H2O and Cu (ClO4)2·6H2O, respectively, and characterized by elemental analyses, IR, UV–Vis spectroscopy and single crystal X‐ray crystallography. X‐ray crystallographic studies indicate that the two Co (II) atoms (Co1 and Co2) in complex 1 have different N2O4 and N2O3 coordination spheres, and distorted octahedral (Co1) and slightly distorted triangular bipyramidal (Co2) geometries, while Cu (II) atoms in complex 2 have also two different N2O4 (Cu1) and N2O3 (Cu2) coordination environments, and complex 2 forms a helical centrosymmetric molecule. In addition, supramolecular interactions, Hirshfeld surfaces analyses, antibacterial and fluorescence properties were also investigated in detail.

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Electrochemical transformations of polymers formed from nickel (II) complexes with salen-type ligands in aqueous alkaline electrolytes

Cited by 19 publications

References 62 publications

Electrocatalytic Study of the Thin Metallopolymer Film of [2,2′‐{1,2‐Ethanediylbis[Nitrilo(1E)‐1‐Ethyl‐1‐Ylidene]}Diphenolate]‐Nickel(II) for Ethanol Electrooxidation

Electrocatalytic Study of the Thin Metallopolymer Film of [2,2′‐{1,2‐Ethanediylbis[Nitrilo(1E)‐1‐Ethyl‐1‐Ylidene]}Diphenolate]‐Nickel(II) for Ethanol Electrooxidation

Electrocatalytic Properties of Ni(II) Schiff Base Complex Polymer Films

Newly synthesized homomultinuclear Co (II) and Cu (II) bissalamo‐like complexes: Structural characterizations, Hirshfeld analyses, fluorescence and antibacterial properties

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