Electropolymerization of non-substituted Mg(II) porphine: Effects of proton acceptor addition

Конев, Д. В.; Devillers, Charles H.; Lizgina, K. V.; Баулин, В. Е.; Воротынцев, М. А.

doi:10.1016/j.jelechem.2014.09.018

Cited by 21 publications

(31 citation statements)

References 28 publications

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“…Electropolymerization medium also contained background electrolyte, 0.1 M TBAPF 6 , and proton acceptor, 1.5 mM 2,6-dimethylpyridine. Polymer film was deposited under potentiostatic MgP electrooxidation at 0.35 V [38].…”

Section: Methodsmentioning

confidence: 99%

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%

Electrochemical quartz crystal microbalance study of magnesium porphine electropolymerization process

Istakova

Конев

Goncharova

et al. 2020

J Solid State Electrochem

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“…The electropolymerization of ZnP was performed in the monomer solution (0.25-1.00 mM) prepared in an ACN/THF 50:50 v/v mixture, containing 0.1 M TBAPF 6 as electrolyte and 1.5 mM 2,6-lutidine as proton acceptor [39]. Polymerization was realized in a potentiodynamic condition by cyclic voltammetry (CV) in the range of either 0 to 0.85 V or 0 A.…”

Section: Electrochemical Setup and Electropolymerization Of Znpmentioning

confidence: 99%

Tuning of interfacial charge transport in polyporphine/phthalocyanine heterojunctions by molecular geometry control for an efficient gas sensor

Kumar

Mejjati

Meunier‐Prest

et al. 2022

Chemical Engineering Journal

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Owing to high interfacial conductivity, organic heterostructures hold great promises to augment the electrical performances of electronic devices. In this endeavor, the present work reports fabrication of novel polyporphine/phthalocyanine heterostructures and investigates the modulation of charge transport induced by structural change of polyporphine and its implication on ammonia sensing properties. Polyporphines materials are electrosynthesized by oxidation of zinc(II) porphine monomer that corresponds to the fully unsubstituted porphyrin. At less-positive anodic potential, low conducting meso,meso-singlylinked type-1 polymer (pZnP-1) is formed in which a monomer unit stays orthogonal to its neighbors. At higher anodic potential, monomer units are fused in the 2D plane to produce β,β-meso-meso-β,β-triply-fused type-2 polymer (pZnP-2), having a π-conjugated structure and high conductivity. Association of these polymers in organic heterojunction devices with lutetium bis-phthalocyanine (LuPc 2 ) reveals non-linear current-voltage (I-V) characteristics typical for interfacial accumulation of charges in the heterostructure for pZnP-1 and a linear I-V behavior for pZnP-2. Characterization of these heterojunctions by impedance spectroscopy further confirms the predominance of interfacial charge transport in pZnP-1/LuPc 2 which is improved with increasing bias, while largely bulk charge transport independent of bias prevails in pZnP-2/LuPc 2 device. Different regimes of charge transport influence ammoniasensing properties of the devices, such that pZnP-1/LuPc 2 demonstrates highly sensitive, reversible and stable response, while pZnP-2/LuPc 2 shows low and unstable response.

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“…When the backward potential or the applied potential was low (<0.40 V vs Ag/Ag + ), a semiconducting material was obtained (pMgP-I), where the MgP unit was kept intact inside the polymer with the probable formation of only one single meso-meso bond between each Scheme 1. Electrochemical oxidative C-C coupling between tri-meso-arylporphyrins (A, [10,11]) and Mg(II) porphine (B, [12,13,[15][16][17][18][19][20][21][22][23]). monomer unit.…”

Section: Meso-meso Electropolymerization Of Porphinementioning

confidence: 99%

Recent advances in electrochemical meso- and β-functionalization of porphyrins and electrografting of diazonium porphyrins

Dimé

Bousfiha

Devillers

2020

Current Opinion in Electrochemistry

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Electropolymerization of non-substituted Mg(II) porphine: Effects of proton acceptor addition

Cited by 21 publications

References 28 publications

Electrochemical quartz crystal microbalance study of magnesium porphine electropolymerization process

Electrochemical quartz crystal microbalance study of magnesium porphine electropolymerization process

Tuning of interfacial charge transport in polyporphine/phthalocyanine heterojunctions by molecular geometry control for an efficient gas sensor

Recent advances in electrochemical meso- and β-functionalization of porphyrins and electrografting of diazonium porphyrins

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