Iron porphyrin-modified electrodes: influence of the method of modification on the stability and electroactivity in oxidation of sulfite or hydrogensulfite in ethanol–water solutions

A glassy carbon electrode modified by a triply-fused-like Co(ii) polyporphine and its ability for sulphite oxidation and detection

“…Most usually these systems incorporates a molecular catalyst which facilitates the electrochemical transformation of the sulphite ion at the electrode surface and therefore favours the emission of the current signal. Porphyrin based materials are adequate for catalyzing sulphite oxidation, [28][29][30] especially in the Co(II) complex form. 31,32 In the reported studies, the catalytically active porphyrin molecule is dispersed in solution, 31 or deposited on the electrode surface, through drop casting, 29,30 or by electropolymerization.…”

Cobalt Xanthate Thin Film with Chemical Bath Deposition

“…Cobalt xanthates are similar to hybrid materials, because they have an organic sulfide part and inorganic metal part as iron xanthate. These organometallic compounds have wide ranging properties such as optical, electrical, and magnetic characteristics [1][2][3][4]. It has been shown that these thin films show different properties such as an antibacterial agent, magnetic and semiconductor material, which allowed them to be used for data storage, solar cell production, and water purification [5][6][7][8][9][10].…”

Direct Metal Substitution of Electropolymerized Ferriprotoporphyrin: A Simple Electrode-Modification Process for Developing Electrocatalytic Materials

“…They concluded that the electrode prepared via electropolymerization performed superiorly to those modified using either a drop-dry or modified dip-dry method, and comparably to the electrode prepared by first covalently linking 4-aminopyridine to the electrode surface followed by their modified dip-dry method. 6 While some porphyrins can electropolymerize quite readily, others unfortunately do not lend themselves to this approach for a variety of reasons. For example, iron (III) protoporphyrin (FePP) is known to coat electrode surfaces through an oxidative polymerization mechanism, 5,7-9 however replacing the iron center with other metals impacts the polymerization process.…”

“…1 Electrochemistry remains one of the more attractive techniques for modifying electrode surfaces as it results in more stable and electrocatalytically-active surfaces compared with most other methods. 6 For example, Ramírez et al compared four methods of modifying a glassy carbon (GC) electrode with Fe(III)-tetrakis(ptetraaminophenyl)porphyrin. They concluded that the electrode prepared via electropolymerization performed superiorly to those modified using either a drop-dry or modified dip-dry method, and comparably to the electrode prepared by first covalently linking 4-aminopyridine to the electrode surface followed by their modified dip-dry method.…”