Electropolymerized manganese porphyrin/polypyrrole films as catalytic surfaces for the oxidation of nitric oxide

Diab, Nizam; Schuhmann, Wolfgang

doi:10.1016/s0013-4686(01)00565-5

Cited by 109 publications

(60 citation statements)

References 54 publications

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“…These complexes that are involved in many vital biological processes, participate via an electrochemical cycle or /and a molecular recognition process. Their immobilization on an electrode surface are often based on an electropolymerization process [3][4][5][6][7][8][9][10][11][12]. Beside immobilized iron and manganese porphyrins, cobalt complexes were also been investigated due to their promising functions as catalysts or selective complexing centers via axial ligation reactions.…”

Section: Introductionmentioning

confidence: 99%

A poly(pyrrole-Cobalt(II)deuteroporphyrin) electrode for the potentiometric determination of nitrite

Cosnier

Gondran

Wessel

et al. 2003

Sensors

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Abstract:The electrochemical properties of a new Co(II) deuteroporphyrin substituted by two electropolymerizable pyrrole groups has been investigated in organic solvent. This functionalization has allowed the preparation of the first example of a cobalt deuteroporphyrin film by oxidative electropolymerization. The resulting conducting polypyrrole film exhibits the regular electroactivity of cobalt deuteroporphyrin. Compared to conventional cobalt porphyrin electrochemistry, the replacement of porphyrin macrocycle by deuteroporphyrin ring results in markedly more negative potential values for the metalcentered oxidation and reduction processes. The influence of NO 2 -as axial ligand on the reductive behavior of the electropolymerized cobalt (II) deuteroporphyrin is examined. The recognition properties of the film illustrated by the potentiometric shift of the Co(II)/(I) reduction were exploited for the determination of NO 2 -in the concentration range 2 10 -6 -2.5 10 -4 M.

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Section: Introductionmentioning

confidence: 99%

A poly(pyrrole-Cobalt(II)deuteroporphyrin) electrode for the potentiometric determination of nitrite

Cosnier

Gondran

Wessel

et al. 2003

Sensors

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“…4), which is assigned to the oxidation of NO. 26 For the flow injection experiment, the amperometric current response (∆I) increases with the SNAP concentration (Fig. 5a).…”

Section: O2 -• and No Detection At Fepor-modified Electrodementioning

confidence: 94%

“…[26][27][28] The Nafion ® film was formed by the immersion of the FePormodified electrode in a 2-propanol solution of Nafion ® twice for 5 s, followed by drying for 1 h at room temperature. The solution concentration range was set to 0 -3 wt%.…”

Section: Preparation Of the Nafion ® /Fepor-modified Electrodementioning

confidence: 99%

“…Nafion ® is known to be a permselective material, where diffusion of anions through its matrix is restrained by the electrostatic interactions between the anionic species and the sulfonate groups of the Nafion ® film. 26 The Nafion ® /FePor-modified electrode was prepared by immersion of the FePor-modified electrode into a Nafion ® /2-propanol solution with a concentration in the range of 0 -3 wt% for 5 s. The Nafion ® film coating was confirmed using XPS. In the wide XPS spectrum, peaks for F 1s and S 2p are observed at 689 and 169 eV, respectively.…”

Section: Preparation Of the Nafionmentioning

confidence: 99%

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A Reactive Oxygen/ZNitrogen Species Sensor Fabricated from an Electrode Modified with a Polymerized Iron Porphyrin and a Polymer Electrolyte Membrane

Matsuoka¹,

Kobayashi

Nakagawa

et al. 2017

ANAL. SCI.

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“…This is the basis of a fourth method of NO synthesis in which a concentrated H 2 SO 4 solution is used to carry out the disproportionation using NaNO 2 as a source of NO 2 À [34,35]. The NO gas thus generated is then bubbled into distilled H 2 O generating an aqueous NO stock solution.…”

Section: Introductionmentioning

confidence: 99%

Calibration of NO sensors for in-vivo voltammetry: laboratory synthesis of NO and the use of UV?visible spectroscopy for determining stock concentrations

et al. 2005

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The increasing scientific interest in nitric oxide (NO) necessitates the development of novel and simple methods of synthesising NO on a laboratory scale. In this study we have refined and developed a method of NO synthesis, using the neutral Griess reagent, which is inexpensive, simple to perform, and provides a reliable method of generating NO gas for in-vivo sensor calibration. The concentration of the generated NO stock solution was determined using UV-visible spectroscopy to be 0.28±0.01 mmol L À1 . The level of NO 2 À contaminant, also determined using spectroscopy, was found to be 0.67±0.21 mmol L À1 . However, this is not sufficient to cause any considerable increase in oxidation current when the NO stock solution is used for electrochemical sensor calibration over physiologically relevant concentrations; the NO sensitivity of bare Pt-disk electrodes operating at +900 mV (vs. SCE) was 1.08 nA lmol À1 L, while that for NO 2 À was 5.9·10 À3 nA lmol À1 L. The stability of the NO stock solution was also monitored for up to 2 h after synthesis and 30 min was found to be the time limit within which calibrations should be performed.

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Electropolymerized manganese porphyrin/polypyrrole films as catalytic surfaces for the oxidation of nitric oxide

Cited by 109 publications

References 54 publications

A poly(pyrrole-Cobalt(II)deuteroporphyrin) electrode for the potentiometric determination of nitrite

A poly(pyrrole-Cobalt(II)deuteroporphyrin) electrode for the potentiometric determination of nitrite

A Reactive Oxygen/ZNitrogen Species Sensor Fabricated from an Electrode Modified with a Polymerized Iron Porphyrin and a Polymer Electrolyte Membrane

Calibration of NO sensors for in-vivo voltammetry: laboratory synthesis of NO and the use of UV?visible spectroscopy for determining stock concentrations

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