Poly(pyrrole-metallotetraphenylporphyrin)-modified electrodes

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

“…Indeed, the electropolymerization process requires 2.33 electrons per pyrrole group plus 2 electrons for the oxidation of 2 into the radical cation form). The resulting electric yield, 12.6 %, is similar to those (1.5 -6.1 %) previously reported for elaboration of polypyrrolic films functionalized by metallotetraphenylporphyrins [4,25] or hydroporphyrin of Ni(II) [11].…”

“…Rotating disk experiments indicated identical values for the current recorded at the first and second reduction process corroborating thus the monoelectronic character of the second reduction. The comparison with the electrochemical behavior of conventional cobalt(II) porphyrin indicates a slight negative shift of the Co(II)/Co(I) couple, namely -1.3 V instead of -1.1_-1.15 V [2,4]. Upon oxidative scanning, 1 exhibits three successive reversible peak systems at E 1/2 = -0.04V (∆E peak = 80mV), E 1/2 = +0.62V (∆E peak = 100mV) and E 1/2 = +0.94V (∆E peak = 110mV).…”

“…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.…”

Flow Injection Analysis of Aziprotryne Using an Electrochemical Sensor Based on Cobalt Phthalocyanine Modified Carbon Paste Electrode

“…The aziprotryne electrocatalytic reduction could involve the Co(II)/Co(I) redox couple present in the phthalocyanine ring, and the other way would be the participation of the conjugated p electron of the phthalocyanine ring. This behavior is similar to the oxygen electroreduction described by different authors [13,14].…”

Poly(1,2‐diaminobenzene) and poly(1,3‐diaminobenzene): Synthesis, characterization, and properties

“…[1][2][3][4][5][6] The functionalization by metallic complexes of bipyridyl type, [7][8][9] porphyrins, 10,11 tetraazaannulene, 12,13 metallated cyclam, 14,15 phthalocyanine, 16,17 and phenanthroline 18 has been investigated as a way to incorporate the metal cations into the polymers. Usually the ligands are difficult to synthesize as they need multistep synthesis and also very expensive.…”