Efficient synthesis of a new electroactive polymer of Co(II) porphine by in-situ replacement of Mg(II) inside Mg(II) polyporphine film

Rolle, Sébastien D.; Конев, Д. В.; Devillers, Charles H.; Lizgina, K. V.; Lucas, Dominique; Stern, Christine; Herbst, Frédéric; Heintz, O.; Воротынцев, М. А.

doi:10.1016/j.electacta.2016.03.039

Cited by 16 publications

(27 citation statements)

References 54 publications

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“…Charge spent for the monomer electrooxidation, which is proportional to the thickness of the polymer layer [32], was 5 mC for the monomer solutions of 0.21, 0.42, and 0.63 mM concentrations, and 6 mC or 20 mC for the 0.39 mM concentration.…”

Section: Methodsmentioning

confidence: 99%

“…Film deposition was terminated after passage of a certain total oxidation charge, Q tot : 5 mC for the monomer concentrations equal to 0.21 mM, 0.42 mM, and 0.63 mM; 6 mC or 20 mC for the 0.39 mM concentration. Film deposition was terminated after passage of a certain total oxidation charge, Q tot : 5 mC for the monomer concentrations equal to 0.21 mM, 0.42 mM, and 0.63 mM; 6 mC or 20 mC for the Thicknesses of these films can be estimated with the use of the real surface area of the Pt electrode (1.5 cm 2 , see above) and the proportionality factor between the polymerization charge and the film thickness (9.65 nm per 1 mC/cm 2 ) [32]: about 30 to 40 nm for thinner films and 130 nm for the thickest one. According to Ref [4], polymer films of such small thicknesses (up to the range of about 100 nm) behave under EQCM conditions as a rigid layer of uniform composition while the viscoelastic effects become pronounced only for films of much larger thicknesses (comparable to 1 μm [40]).…”

Section: Deposition Of Magnesium Polyporphine (Pmgp-i) Filmmentioning

confidence: 99%

“…1), represents a homopolymer possessing original optical and electric properties [28]. It also serves as the starting compound for synthesis of the Mg polyporphine of type II (pMgP-II) [29] as well as freebase polyporphines and polymetalloporphines of various metals [30][31][32][33][34]. These reasons have led to a detailed study of the mechanism of this polymer (pMgP-I) deposition since it is the stage which largely determines characteristics of all subsequent poly(metallo)porphines.…”

Section: Introductionmentioning

confidence: 99%

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Electrochemical quartz crystal microbalance study of magnesium porphine electropolymerization process

Istakova

Конев

Goncharova

et al. 2020

J Solid State Electrochem

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Material and charge balances in the course of the electropolymerization process of the non-substituted Mg(II) porphine (MgP) at a low oxidation potential from its acetonitrile solutions of various concentrations have been studied via the in situ electrochemical quartz crystal microbalance method (EQCM). Thus, registered electrode mass increase due to the MgP oxidation at its surface has been used, in combination with in situ spectroelectrochemical data, for determination of the key parameters of the polymerization process and of the magnesium polyporphine films deposited on the electrode surface: current efficiency of the film deposition process, average charge spent for transformation of a monomer molecule into monomer unit inside the film, number of monomer units inside the deposited film, average number of valence bonds per one monomer unit inside the film. Besides, the EQCM method applied to the discharge process of the electropolymerized film has allowed us to estimate the average charging (oxidation) degree of the monomer unit inside the film at the polymerization potential and the degree of the solvent participation in the course of the polymer's redox transitions. It has been established that the number of bonds between porphine units is within the range of 2.2 to 2.4, with its slight increase for films deposited at higher monomer concentrations. Conclusions on the structure of polyporphine chains have been made.

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Section: Methodsmentioning

confidence: 99%

Section: Deposition Of Magnesium Polyporphine (Pmgp-i) Filmmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Electrochemical quartz crystal microbalance study of magnesium porphine electropolymerization process

Istakova

Конев

Goncharova

et al. 2020

J Solid State Electrochem

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“…Electrochemistry works usually with aqueous but can use non-aqueous electrolyte solutions, with a large range of solvent having a high value of permittivity (e.g., formamide, ε = 111, µ = 3.73 D) but also with low permittivity value and a low dipole moment (e.g., 1,4-dioxane, ε = 2.3, μ = 0.45D). Except with full apolar solvent (dipolar moment close to zero, µ → 0) and very viscous solvent, it is possible to use solvent suitable for lipophilic antioxidant, using surfactant [ 66 ] or complex support electrolytes, such as tetrabutylammonium hexafluorophosphate (TBAPF6), dissolved in a mixture of organic solvents, dichloromethane and acetonitrile [ 67 ], or in acetonitrile alone [ 68 ].…”

Section: Electrochemistrymentioning

confidence: 99%

The Importance of Developing Electrochemical Sensors Based on Molecularly Imprinted Polymers for a Rapid Detection of Antioxidants

et al. 2021

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This review aims to pin out the importance of developing a technique for rapid detection of antioxidants, based on molecular imprinting techniques. It covers three major areas that have made great progress over the years in the field of research, namely: antioxidants characterization, molecular imprinting and electrochemistry, alone or combined. It also reveals the importance of bringing these three areas together for a good evaluation of antioxidants in a simple or complex medium, based on selectivity and specificity. Although numerous studies have associated antioxidants with molecular imprinting, or antioxidants with electrochemistry, but even electrochemistry with molecular imprinting to valorize different compounds, the growing prominence of antioxidants in the food, medical, and paramedical sectors deserves to combine the three areas, which may lead to innovative industrial applications with satisfactory results for both manufacturers and consumers.

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“…XPS analyses were performed by a SIA 100 Riber/Cameca apparatus and a monochromated Al K X-ray source (energy of 1486.6 eV, accelerating voltage of 12 kV and power of 200 W)[34]. A Riber Mac 2 semi-imaging spectrometer was used with a resolution (measured from the Ag 3d5/2 line width) of 2.0 eV for global spectra and 1.3 eV for windows corresponding to selected lines.…”

mentioning

confidence: 99%

Efficient Quantification by X-ray Photoelectron Spectroscopy and Thermogravimetric Analyses of the One-Pot Grafting of Two Molecules on the Surface of Iron Oxide Nanoparticles

Maurizi

Sallem

Boudon

et al. 2019

j nanosci nanotechnol

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Superparamagnetic iron oxide nanoparticles (SPION) can be developed for biomedical applications but need to be functionalized before use to avoid agglomeration in biological media. In this study, SPION were functionalized in one step with two organic molecules. Firstly, polyethylene glycol (PEG) was mixed for 46 hours to improve steric stability and then, two hours before the end of the reaction, dimercaptosuccinic acid (DMSA) was added to provide negative charges and thiol groups. Three different molecular weights of PEG were used (550, 2000 and 5000 g.mol-1). We demonstrated that by coupling thermogravimetric to X-Ray photoelectron spectrometry analyses it was possible to quantify accurately the covering of SPION's surface. We also showed that the length of the PEG influenced the quantity of DMSA adsorbed. With the smallest PEG (550 g.mol-1) the presence of DMSA is almost ten times higher than with the two other PEG used proving that long polymers prevent the adsorption of small molecules on the surface of SPION.

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Efficient synthesis of a new electroactive polymer of Co(II) porphine by in-situ replacement of Mg(II) inside Mg(II) polyporphine film

Cited by 16 publications

References 54 publications

Electrochemical quartz crystal microbalance study of magnesium porphine electropolymerization process

Electrochemical quartz crystal microbalance study of magnesium porphine electropolymerization process

The Importance of Developing Electrochemical Sensors Based on Molecularly Imprinted Polymers for a Rapid Detection of Antioxidants

Efficient Quantification by X-ray Photoelectron Spectroscopy and Thermogravimetric Analyses of the One-Pot Grafting of Two Molecules on the Surface of Iron Oxide Nanoparticles

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