Electrocatalysis on tetraruthenated nickel and cobalt porphyrins electrostatic assembled films

Electrochemical preparation of conductive films of tetrapyridylporphyrins coordinated to four [Ru(5-NO2-phen)2Cl]+ groups

“…Tetrapyridylporphyrins with four coordinated Ru(II) complexes at the periphery of the macrocycle have been studied for their unusual electrocatalytic [1,2], electroanalytical [3,4], photophysical [5] and photoelectrochemical [6][7][8] properties.…”

Steric and Catalytic Effects in Tetraruthenated Manganese Porphyrins

“…The broad reduction wave starting at -0.5 V is assigned to the reduction of sulfite directly on the GCE surface. [41,42] [43] which exhibit high activity for the reduction of both substrates. This reductive electrocatalytic activity is due to the formation of reduced species with M I P character, such as Ni I P and Co I P, which should be responsible for the efficient electron-transfer to nitrite and sulfite.…”

Electrochemical Reduction of S(IV) Compounds in Water‐Ethanol Solutions at Nafion/Tetraruthenated Porphyrins Glassy Carbon Modified Electrodes

“…Then it is possible to attribute the changes observed in Figure 6 to the Co center. Where this metal center should be involved in the formation of an intermediary complex or adduct [38,39]. At this stage it is possible to summarize that two factors are affecting the kinetics that controls the electroreduction of SO 2 at GC/Nf/CoTRP modified electrode: i) The slow charge propagation in the film (E), where the main evidence it is demonstrated by the effect of the concentration of SO 2 in the RDE experiments.…”

“…Peripherical groups can also be used to control the interaction with other molecular species and with themselves [15].…”