Characterization of Conductive Polymeric Nickel(II) Tetrakis(3‐methoxy‐4‐hydroxy‐phenyl)Porphyrin as an Anodic Material for Electrocatalysis

Maliński, Tadeusz; Ciszewski, Aleksander; Bennett, J. E.; Fish, Judith R.; Czuchajowski, Leszek

doi:10.1149/1.2085915

Cited by 104 publications

(36 citation statements)

References 32 publications

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“…The Ni 2p spectrum of the NiTSPP monomer consists, as (Table 4), these values being similar to those for other Ni porphyrins. [22][23][24] The weak satellite at 863.1 eV is also in agreement with the literature. 25 The absence of strong shakeup satellite structure confirms the diamagnetic nature of Ni(II) in the TSPP monomer.…”

Section: X-ray Photoelectron Spectroscopy (Xps)supporting

confidence: 91%

Study by XPS and UV−Visible and DRIFT Spectroscopies of Electropolymerized Films of Substituted Ni(II)-p-Phenylporphyrins and -Phthalocyanines

Berríos

Marco²,

Gutiérrez³

et al. 2008

J. Phys. Chem. B

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Films of nickel tetrasulfophthalocyanine and -p-phenylporphyrin (NiTSPc and NiTSPP, respectively) were obtained by repetitive cyclic voltammetry (RCV) of the 1 mM complex in aqueous solution, while films of the water-insoluble nickel tetraaminophthalocyanine and -p-phenylporphyrin (NiTAPc and NiTAPP, respectively) had to be obtained by RCV of the 1 mM complex in organic solvents. Glassy carbon (GC), ITO, or platinum electrodes were used as substrates. The modified electrodes were characterized by cyclic voltammetry (CV) and UV-visible, infrared, and X-ray photoelectron spectroscopies. The CVs of the sulfo films showed the characteristic peaks of the Ni(II)/Ni(III) process, whereas the CVs of the amino films did not, very small Ni(II)/Ni(III) peaks appearing only after activation by RCV. Upon oxidation to Ni(III) both sulfo films changed from transparent to dark violet. The IR spectra of the polyNiTSPP and the polyNiTSPc films showed bands at 3628 cm -1 and 3500 cm -1 , respectively, which could be due to interstitial water molecules occluded during the polymerization. The Ni 2p XP spectra indicate that the magnetic character of the Ni(II) ions in NiTSPP is dramatically changed by the polymerization, from diamagnetic in the monomer to paramagnetic in the polymeric film, indicating the formation of Ni-O-Ni bridges or of clusters of Ni(OH) 2 . On the contrary, the Ni 2p XP spectra of the unactivated NiTAPP film, in which the Ni(II)/Ni(III) process was absent, showed only diamagnetic Ni(II). Therefore, it is concluded that only paramagnetic Ni(II) ions can be electrooxidized to Ni(III).

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Section: X-ray Photoelectron Spectroscopy (Xps)supporting

confidence: 91%

Study by XPS and UV−Visible and DRIFT Spectroscopies of Electropolymerized Films of Substituted Ni(II)-p-Phenylporphyrins and -Phthalocyanines

Berríos

Marco²,

Gutiérrez³

et al. 2008

J. Phys. Chem. B

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“…The representative example of such electrodes are those in which Ni(II)cyclam and other similar Ni(II)tetraazamacrocyclic complexes [35,36], Ni(II)-tetramethyldibenzotetraaza (14)annulene [37], Ni(II)-curcumin complex [25], Ni(II)-vanillin porphyrin [38,39], Ni(II)-tetrakis(N-methylpyridinium)porphyrin and Ni(II)-tetrakis(4-sulfonatophenyl) porphyrin [40,41] complexes were used as modifiers. It has been suggested that such polymer coated electrodes, with a three dimensional (3D) dispersion of the reacting centers, offer an increased catalytic efficiency in comparison with those covered by films with two dimensional arrangement of the catalytic sites.…”

Section: Introductionmentioning

confidence: 99%

Electrocatalytic Oxidation of Methanol on a Nickel‐Porphyrin IX Complex Modified Glassy Carbon Electrode in Alkaline Medium

Golabi

Nozad

2004

Electroanalysis

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Electrocatalytic oxidation of methanol on a glassy carbon disc electrode modified with Ni(II)-hematoporphyrin IX, complex and conditioned by potential recycling in a limited range (between 100 and 600 mV vs. SCE) in 0.10 M NaOH solution, abbreviated as NiOHPME(A), was studied by cyclic voltammetry in alkaline medium. The results were compared with those obtained for a NiO modified glassy carbon electrode, NiOME, prepared in similar conditions. The findings show that the NiOHP film at NiOHPME(A) behaves as an efficient electrocatalyst for the oxidation of methanol in alkaline medium via Ni(III) species with the cross-exchange reaction occurring throughout the layer at a low concentration of methanol and for a thin film of modifier. A plausible mechanism was proposed for catalytic oxidation of methanol at NiOHP modified electrode. Moreover, the effects of various parameters such as the scan rate, methanol concentration, thickness of NiOHP film and the real surface area of modified electrode on the oxidation of methanol were investigated. Finally, it has been shown that the NiOHPME(A) has a long-term stability toward the oxidation of methanol.

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“…Cyclic voltammetric deposition was performed within the potential range from À0.2 V to 1.0 V at a scan rate of 200 mV s À1 . Ef®ciency of a poly-TMHPP-Ni coating (G 0:8À À 1:5 nmol=cm 2 [5]) was calculated from the peak area, which illustrates the oxidation of Ni being present in the growing poly-®lm. That was usually obtained after 13±15 cycles.…”

Section: Electroactive Surface Preparationmentioning

confidence: 99%

Electrochemical and UV-Vis Spectroscopic Measurements of Nitric Oxide in Fibroblasts and Astrocytes

et al. 2000

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Two complementary analytical methods were applied to measure nitric oxide production in two cell cultures of fibroblasts and astrocytes: UV‐vis spectroscopic assay of nitrites based on Griess reaction and direct, electrochemical determination of nitric oxide with use of a 5 mm diameter disk porphyrinic sensor. The nitrite measurement was used in order to get total quantitative information on NO production in a specified time. Application of an electrochemical sensor allowed observation of the dynamics and stabilization of nitric oxide production in real time, in the vicinity of a culture of stimulated cells. In experiments, cell suspension was placed just above the sensor surface or cells were grown directly on the modified electrode. Current curves were recorded after base current stabilization and injection of L‐arginine the last remaining cosubstrate in the system. Collected data enabled one to estimate the local concentration of nitric oxide produced in the culture of fibroblasts to be 70 nM.

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Characterization of Conductive Polymeric Nickel(II) Tetrakis(3‐methoxy‐4‐hydroxy‐phenyl)Porphyrin as an Anodic Material for Electrocatalysis

Cited by 104 publications

References 32 publications

Study by XPS and UV−Visible and DRIFT Spectroscopies of Electropolymerized Films of Substituted Ni(II)-p-Phenylporphyrins and -Phthalocyanines

Study by XPS and UV−Visible and DRIFT Spectroscopies of Electropolymerized Films of Substituted Ni(II)-p-Phenylporphyrins and -Phthalocyanines

Electrocatalytic Oxidation of Methanol on a Nickel‐Porphyrin IX Complex Modified Glassy Carbon Electrode in Alkaline Medium

Electrochemical and UV-Vis Spectroscopic Measurements of Nitric Oxide in Fibroblasts and Astrocytes

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