Electrochemical deposition of 5,10,15,20-tetrakis-(4-sulphonatophenyl) porphyrin and its Co(II) derivative at a gold microelectrode array

Wael, Karolien De; Adriaens, Annemie; Temmerman, E.

doi:10.1016/j.aca.2005.08.038

Cited by 11 publications

(5 citation statements)

References 19 publications

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“…2 shows the current-potential behaviour of a bare gold electrode (1) and different phthalocyanine or porphyrin modified gold electrodes (2-9) in a Na 2 HPO 4 /NaOH buffer solution containing 0.01 mol L −1 hydroxide. A detailed explanation of all electrochemical processes related to the phthalocyanine or porphyrin can be found in literature [20][21][22]. Only the oxidation process in the potential region of 0.7-1.2 V vs. SCE and the reduction peak that starts at −0.1 V vs. SCE are relevant for this study.…”

Section: Methodsmentioning

confidence: 99%

Comparison between the electrocatalytic properties of different metal ion phthalocyanines and porphyrins towards the oxidation of hydroxide

Wael

Adriaens

2008

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This work reports on the electrocatalytic oxidation of hydroxide using different central metal ion phthalocyanines and porphyrins immobilized on gold electrodes. The apparent electrocatalytic activity of cobalt phthalocyanine or porphyrin modified electrodes was found to be the greatest among the present series of metal ion macrocycles investigated. Copper and unmetallated phthalocyanine or porphyrin modified electrodes show no electrocatalytic behaviour towards hydroxide, such as bare gold. A possible mechanism for the enhanced reactivity of cobalt ion macrocycles towards the oxygen evolution is given. It is also stated that the electrocatalytic activity towards an adsorbate involves several aspects, such as the coordination state of the central metal ion, the nature of the ligand, the stability of the complexes, the number of d electrons, the energy of orbitals and the strength of the bonding between the central metal ion and the axial ligand.

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Section: Methodsmentioning

confidence: 99%

Comparison between the electrocatalytic properties of different metal ion phthalocyanines and porphyrins towards the oxidation of hydroxide

Wael

Adriaens

2008

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“…Hexadecanethiol, dodecanethiol, and hexanethiol monolayers were created on gold microelectrodes array by a series of repeated adsorption and electrochemical desorption steps 126. A 5,10,15,20‐tetrakis‐(4‐sulphonatophenyl) porphyrin Co(II) modified gold microelectrode array is expected to be a useful tool for electroanalysis and electrocatalysis 127…”

Section: Modificationmentioning

confidence: 99%

Microelectrode Arrays for Electrochemistry: Approaches to Fabrication

Huang

O’Mahony

Compton

2009

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Microelectrode arrays have unique electrochemical properties such as small capacitive-charging currents, reduced iR drop, and steady-state diffusion currents. These properties enable the use of microelectrode arrays and have captured much interest in the field of electrochemistry. Techniques for the fabrication of such arrays are reviewed. The relative features and merits of different techniques are also discussed.

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“…Porphyrin has a conjugated system consisting of 18 π electrons, which makes it a favorable candidate for organic semiconductor devices. 38,39) The level of doping was optimized for the cells and characterized by scanning electron microscopy (SEM), solar simulator determination, X-ray diffraction (XRD) analysis, and UV-vis absorption spectroscopy.…”

Section: Introductionmentioning

confidence: 99%

Nickel tetraphenylporphyrin doping into ZnO nanoparticles for flexible dye-sensitized solar cell application

Choudhury

Kato

Kishi

et al. 2017

Jpn. J. Appl. Phys.

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In this study, we report on ZnO-based flexible dye-sensitized solar cells (DSCs) doped with different concentrations of 5,10,15,20-tetraphenyl-21H,23H-porphyrin nickel(II) (NiTPP). The photoelectrodes were prepared by blade coating, followed by a hot-compression technique. The effects of NiTPP doping on the surface morphology, structural, optical, and photovoltaic properties were studied. The surface morphology was observed by scanning electron microscopy (SEM), which confirmed the presence of NiTPP particles and also some aggregated particles visible at higher doping concentrations. The structural properties were examined by X-ray diffraction analysis and Raman spectroscopy, which confirmed the hexagonal wurtzite ZnO structure. The crystallite size of the ZnO nanoparticles (NPs) increased while the lattice strain decreased with increasing NiTPP doping concentration. The increment in the crystallite size might have induced light scattering inside the film to some extent. Optical absorption spectra showed the broadening of the spectrum in the lower-wavelength region, and a new absorption peak appeared (at 422 nm) as an effect of NiTPP doping. The red and blue shifts were observed for that peak as an effect of various doping concentrations. The Raman study of the films showed that there is no significant changes in the ZnO or NiTPP crystallite structure because of the NiTPP doping at different concentrations. Photocurrent–voltage (I–V) analysis showed that the 0.7%-NiTPP-doped cell attained the highest light-to-electric conversion efficiency of 2.7% in this investigation, which was about 42% higher than that of a non-NiTPP-doped cell.

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Electrochemical deposition of 5,10,15,20-tetrakis-(4-sulphonatophenyl) porphyrin and its Co(II) derivative at a gold microelectrode array

Cited by 11 publications

References 19 publications

Comparison between the electrocatalytic properties of different metal ion phthalocyanines and porphyrins towards the oxidation of hydroxide

Comparison between the electrocatalytic properties of different metal ion phthalocyanines and porphyrins towards the oxidation of hydroxide

Microelectrode Arrays for Electrochemistry: Approaches to Fabrication

Nickel tetraphenylporphyrin doping into ZnO nanoparticles for flexible dye-sensitized solar cell application

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