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- W1979442077 abstract "The reaction of [Fe(H2O)PW11O39]4− with tetrakis-pyridyl-porphyrin was studied in solution. The formation of 1/1 and 4/1 complexes was shown by spectrophotometry. The 4/1 complex is also obtained by reaction of the heteropolyanion in solution with the cobalt-pyridyl-porphyrin previously adsorbed on a glassy carbon electrode. The complex is stabilized at the surface of the electrode in the presence of cesium chloride. Study of the electrocatalytic reduction of dioxygen at pH = 2 showed rhat the two-electron pathway observed with porphyrin alone is transformed in a four-electron pathway. La réaction de [Fe(H2O)PW11O39]4− avec la tétrakis-pyridyl-porphyrine a été étudiée en solution. La formation de complexes 1/1 et 4/1 a été montrée par spectrophotométrie. Le complexe 4/1 est également obtenu avec la cobalt-pyridyl-porphyrine lorsque celle-ci a été préalablement adsorbée sur une électrode de carbone vitreux. Le complexe est stabilisé par la présence de chlorure de césium. L'étude de la réduction électrocatalytique du dioxygène à pH = 2, sur cette électrode, a montré qu'elle se faisait par un mécanisme à 4 électrons, alors qu'elle se fait par un mécanisme à 2 électrons avec la porphyrine seule." @default.
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- W1979442077 date "1998-05-01" @default.
- W1979442077 modified "2023-10-14" @default.
- W1979442077 title "Coordination of the tetrakis-pyridyl-porphyrin to the ferri-11-tungstophosphate. Electrocatalytic activity of the complex immobilized on a glassy carbon electrode" @default.
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- W1979442077 doi "https://doi.org/10.1016/s1387-1609(98)80177-1" @default.
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