Design and characterization of chemically modified electrodes with iron(III) porphyrinic-based polymers: study of their reactivity toward nitrites and nitric oxide in aqueous solution

Bedioui, Féthi; Trevin, Stéphane; Albin, V.; Guadalupe, María; Villegas, Gomez; Devynck, Jacques

doi:10.1016/s0003-2670(96)00621-6

Cited by 92 publications

(64 citation statements)

References 16 publications

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“…2. It is clear that the metal-centred redox systems are situated at about 0.28 V for Co III /Co(II) [8,20,25,26] and at about À0.2 V for Fe III /Fe(II) [20,24,27], while the oxidation and reduction peaks of the porphyrin ring are visible at about 0.95 and À1.0 V respectively. Based on the above results, the signals of CuTPP at about À0.05 V will be caused by the copper ions and cannot be due to the porphyrin-centred redox reaction, as these occur at much higher and lower potentials (about 0.95 and À1.0 V).…”

Section: Voltammetric Responses Of Cotpp Fetppcl and Cutpp Complexesmentioning

confidence: 99%

Electrochemically driven introduction of copper ions into the ring of 5,10,15,20-tetraphenyl-21H, 23H-porphyrin mechanically attached as solid microparticles to a graphite electrode

Zhuang

Scholz

2000

J. Porphyrins Phthalocyanines

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Upon cyclic electrochemical polarization, traces of 5,10,15,20-tetraphenyl-21H,23H-porphyrin (H2TPP), which have been mechanically transferred to the surface of a paraffin-impregnated graphite electrode, incorporate copper ions from aqueous solution into the porphyrin ring to form CuTPP . The mechanism of formation of copper porphyrin and the catalytic action of the latter on the electroreduction of oxygen were studied by cyclic voltammetry and square-wave voltammetry. In solid CuTPP the Cu II/ Cu I system is electrochemically active according to the following insertion electrochemical reaction: [Formula: see text]. When the CuTPP is dissolved in organic solvents, the central copper ion does not show any electrochemical activity in the accessible potential range.

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Section: Voltammetric Responses Of Cotpp Fetppcl and Cutpp Complexesmentioning

confidence: 99%

Electrochemically driven introduction of copper ions into the ring of 5,10,15,20-tetraphenyl-21H, 23H-porphyrin mechanically attached as solid microparticles to a graphite electrode

Zhuang

Scholz

2000

J. Porphyrins Phthalocyanines

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“…The aim of this work is to illustrate how the introduction of complexed Fe(III) ion into the network structure of the BADGE, n = 0 resin transfers the magnetic properties of the ion to the new material. Hemin has many potential applications as catalyst for reactions related to energy and environment, includ-ing the electrochemical reduction of uranium [15], nitrite [16,17], nitric oxide [18][19][20], hydrogen peroxide [21], carbon dioxide [22], and oxidation of peroxynitrite [23]. Hemin is also able to catalyze the oxygen reduction reaction [24].…”

Section: Introductionmentioning

confidence: 99%

Paramagnetic epoxy resin

Barreiro¹,

Fraga²,

Jover³

et al. 2017

Express Polym. Lett.

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Abstract. This work illustrates that macrocycles can be used as crosslinking agents for curing epoxy resins, provided that they have appropriate organic functionalities. As macrocycles can complex metal ions in their structure, this curing reaction allows for the introduction of that metal ion into the resin network. As a result, some characteristic physical properties of the metallomacrocycle could be transferred to the new material. The bisphenol A diglycidyl ether (BADGE, n = 0) and hemin (a protoporphyrin IX containing the Fe(III) ion, and an additional chloride ligand) have been chosen. The new material has been characterized by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), Fourier Transform Infrared (FT-IR), Nuclear Magnetic Resonance (NMR), Transmission Electron Microscopy (TEM), and magnetic susceptibility measurements). Fe(III) remains in the high-spin state during the curing process and, consequently, the final material exhibits the magnetic characteristics of hemin. The loss of the chlorine atom ligand during the cure of the resin allows that Fe(III) can act as Lewis acid, catalyzing the crosslinking reactions. At high BADGE n = 0/hemin ratios, the formation of ether and ester bonds occurs simultaneously during the process.

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“…From log I vs log v graphs and Ip vs v 0.5 (non shown) it is possible to conclude that the mechanism has a diffusion control [21].…”

Section: Electrochemical Calculationsmentioning

confidence: 98%

ELECTRODES MODIFIED BY Π STACKING OF METALLIC PHTHALOCYANINES AND ITS ELECTROCATALYTIC ACTIVITY ON NITRITE OXIDATION

Navarrete

Canales

Rio

et al. 2013

J. Chil. Chem. Soc.

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In this work, it proposed the developing of a new material, a modified electrode with metallic phthalocyanines stacking columns, MxPc (Mx = Co, Fe and Ni), assembled by p interactions, which have a behavior as a supramolecular system. These electrodes showed an important electrocatalytic activity against nitrite oxidation, compared to the same complexes monomer multilayers adsorbed on the electrode (M-MxPc). It is proposed two new obtaining methods of these systems, S1-MxPc, where the complexes would form a column and would be coordinated with the surface electrode through a covalent bond of 4-aminopyridine (4-AP), and S2-MxPc, where the own functional groups of glassy carbon (GC) would be the covalent unions able to coordinate the complexes and the columns formation. These covalent unions between the electrode surface and phthalocyanines, would give a directional stacking, and therefore, would modify both its electrocatalytical activity and its electrical features.It was also studied the dependence between the activity and the complex central metal (Co, Fe and Ni), finding a great dependence between them. It was found that the S2-MxPc modified electrodes were more stables and actives. The higher activity was found on S2-CoPc, which also performs a linear response. This last feature it is seen on a calibration curve with a large range of concentrations. It is important to notice that there is actually no relative information about the behavior of the new electrodes proposed on this work.

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Design and characterization of chemically modified electrodes with iron(III) porphyrinic-based polymers: study of their reactivity toward nitrites and nitric oxide in aqueous solution

Cited by 92 publications

References 16 publications

Electrochemically driven introduction of copper ions into the ring of 5,10,15,20-tetraphenyl-21H, 23H-porphyrin mechanically attached as solid microparticles to a graphite electrode

Electrochemically driven introduction of copper ions into the ring of 5,10,15,20-tetraphenyl-21H, 23H-porphyrin mechanically attached as solid microparticles to a graphite electrode

Paramagnetic epoxy resin

ELECTRODES MODIFIED BY Π STACKING OF METALLIC PHTHALOCYANINES AND ITS ELECTROCATALYTIC ACTIVITY ON NITRITE OXIDATION

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Design and characterization of chemically modified electrodes with iron(III) porphyrinic-based polymers: study of their reactivity toward nitrites and nitric oxide in aqueous solution

Cited by 92 publications

References 16 publications

Electrochemically driven introduction of copper ions into the ring of 5,10,15,20-tetraphenyl-21H, 23H-porphyrin mechanically attached as solid microparticles to a graphite electrode

Electrochemically driven introduction of copper ions into the ring of 5,10,15,20-tetraphenyl-21H, 23H-porphyrin mechanically attached as solid microparticles to a graphite electrode

Paramagnetic epoxy resin

ELECTRODES MODIFIED BY &#928; STACKING OF METALLIC PHTHALOCYANINES AND ITS ELECTROCATALYTIC ACTIVITY ON NITRITE OXIDATION

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ELECTRODES MODIFIED BY Π STACKING OF METALLIC PHTHALOCYANINES AND ITS ELECTROCATALYTIC ACTIVITY ON NITRITE OXIDATION