Dye-modified electrodes for photogalvanic cells

Bauldreay, J.M.; Archer, Mary D.

doi:10.1016/0013-4686(83)85210-4

Cited by 145 publications

(75 citation statements)

References 58 publications

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“…Karyakin et al [53] reported that the polymerization of monomer containing one or two tertiary amine groups was taking place through tertiary amine. Moreover, as polymerization occurs, more tertiary amine groups become nitrogen bridges and these bridges become electroactive similar to those in polyaniline and poly(thionine) films [54,55]. PyB monomers were able to form an electroactive polymer by anodic oxidation from acidic aqueous solutions similar to poly(methylene blue) nor poly(methylene green) since its chemical structure resembles with methylene blue and methylene green [10,52,53].…”

Section: Modification Of Electrode Surfacementioning

confidence: 99%

Amperometric Sensor for Detection of the Reduced Form of Nicotinamide Adenine Dinucleotide Using a Poly(pyronin B) Film Modified Electrode

Kumar

Chen

2009

Electroanalysis

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An electrochemical method for the preparation of poly(pyronin B) film was proposed in this paper. A poly(pyronin B) (poly(PyB)) film modified glassy carbon electrode (GCE) has been fabricated via an electrochemical oxidation procedure and applied to the electrocatalytic oxidation of reduced form of nicotinamide adenine dinucleotide (NADH). The poly(PyB) film modified electrode surface has been characterized by atomic force microscope (AFM), scanning electron microscope (SEM), electrochemical impedance spectroscopy (EIS), UV-visible absorption spectrophotometry (UV-vis) and cyclic voltammetry (CV). These studies have been used to investigate the poly(PyB) film, which demonstrates the formation of the polymer film and the excellent electroactivity of poly(PyB) in neutral and even in alkaline media. Due to its potent catalytic effects towards the electrooxidation of NADH at lower potential (0.0 V), poly(PyB) film modified electrode can be used for the selective determination of NADH in real samples because of dopamine, ascorbic acid and uric acid oxidation can be avoided at this potential. The catalytic peak currents are linearly dependent on the concentrations of NADH in the range of 1.0 Â 10 À6 to 5.0 Â 10 À4 mol/L with correlation coefficients of 0.999. The detection limits for NADH is 0.5 Â 10 À6 mol/L. Poly(PyB) modified electrode also shows good stability and reproducibility due to the irreversible attachment of polymer film at GCE surface.

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Section: Modification Of Electrode Surfacementioning

confidence: 99%

Amperometric Sensor for Detection of the Reduced Form of Nicotinamide Adenine Dinucleotide Using a Poly(pyronin B) Film Modified Electrode

Kumar

Chen

2009

Electroanalysis

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“…After initial formation of a radical cation, the electropolymerisation is fast in the first 10 cycles after which the current increased less. The peak system B 1 , A 1 corresponds to the reduction and reoxidation of the polymer, in the presence of aqueous medium or hydrogen ions, respectively [26][27][28][29][30], in the same potential range as for reduction and oxidation of the neutral red monomer.…”

Section: Mediator Depositionmentioning

confidence: 99%

Design and application of a flow cell for carbon-film based electrochemical enzyme biosensors

Bârsan

Klincar

Batič

et al. 2007

Talanta

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A flow cell has been designed for use with an electrochemical enzyme biosensor, based on low-cost carbon-film electrodes. Three types of mediators were used: cobalt and copper hexacyanoferrates and poly(neutral red) (PNR), covered with glucose oxidase (GOx) immobilised by cross-linking with glutaraldehyde in the presence of bovine serum albumin or inside a oxysilane sol-gel network. Mixtures of sol-gel precursors were made from 3-aminopropyl-triethoxysilane (APTOS) together with methyltrimethoxysilane (MTMOS), methyltriethoxysilane (MTEOS), tetraethyloxysilane (TEOS) or 3-glycidoxypropyl-trimethoxysilane (GOPMOS), and the best chosen for encapsulation. Optimisation in batch mode, using amperometric detection at fixed potential, showed the PNR-GOx modified carbon-film electrodes to be best for flow analysis for both glutaraldehyde and sol-gel enzyme immobilisation. Both types of enzyme electrode were tested under flow conditions and the reproducibility and stability of the biosensors were evaluated. The biosensors were used for fermentation monitoring of glucose in grape must and interference studies were also performed.

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“…Moreover, as polymerization occurs, more pendent amine groups become nitrogen bridges and these bridges become electroactive, similar to those in polyaniline and poly(thionine) films. 35 Polyaniline (PAn) films have won particular attention for their high conductivity, good redox reversibility and excellent stability. However, the catalytic activity of PAn is significantly imfluenced by the pH value, and little electrochemical activity is found at pH > 4.…”

Section: Introductionmentioning

confidence: 99%

Novel Nitrite Sensing Using a Palladium-polyphenosafranine Nano-composite

Zhu

Lin

2007

ANAL. SCI.

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A novel palladium-polyphenosafranine nano-composite (PPS-Pd) was synthesized by electrochemical co-deposition at a glassy carbon electrode (GCE) for fabrication of a nitrite sensor, PPS-Pd/GCE. This PPS-Pd film was characterized by X-ray photoelectron spectroscopy (XPS) and field emission scanning electron microanalysis (SEM). It was found that the PPS-Pd nano-composite consisted of Pd nanoparticles smaller than 10 nm in diameter which stick together due to the polymer, forming a Pd-embedded PPS layer structure. The sensing ability was investigated by cyclic voltammetry (CV), differential pulse voltammetry (DPV) and differential pulse amperometry (DPA). The PPS-Pd/GCE had excellent catalytic activity toward the oxidation of nitrite: high current sensitivity of 0.365 A/M cm -2 , good reproducibility, good stability and fast response. In neutral solutions, a linear concentration range of 1.0 × 10 -6 to 1.1 × 10 -3 M (R 2 = 0.999) with the detection limit (s/n = 3) of 3 × 10 -7 M nitrite was obtained for DPV determination.

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Dye-modified electrodes for photogalvanic cells

Cited by 145 publications

References 58 publications

Amperometric Sensor for Detection of the Reduced Form of Nicotinamide Adenine Dinucleotide Using a Poly(pyronin B) Film Modified Electrode

Amperometric Sensor for Detection of the Reduced Form of Nicotinamide Adenine Dinucleotide Using a Poly(pyronin B) Film Modified Electrode

Design and application of a flow cell for carbon-film based electrochemical enzyme biosensors

Novel Nitrite Sensing Using a Palladium-polyphenosafranine Nano-composite

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