Reactivity trends of surface-confined Co-tetraphenyl porphyrins and vitamin B12 for the oxidation of 2-aminoethanethiol: Comparison with Co-phthalocyanines and oxidation of other thiols

Optimizing the Electrocatalytic Activity of Surface Confined Co Macrocyclics for the Electrooxidation of Thiocyanate at pH 4

“…It is difficult to estimate the slope of the falling region in Figure 4 due to the scatter of the data. However, if the data point due to 4b(Pyr)CoPz) is not considered, the slope of the falling region is À0.250 V/decade, which is close to the value observed for 3 reactions studied before, namely, the oxidation of 2-mercaptoethanol, [44,45] mercaptoacetate [46] and of aminoethanethiol [47]. If the data point of 4b(Pyr)CoPz) is considered, a straight line can be drawn presenting a slope of À3.0 V/decade which does not make any physical sense, according to the interpretation of the data that follows.…”

“…The redox potential can be "tuned" so to obtain maximum catalytic activity for the oxidation of thiocyanate and this is true for many other reactions. This could be an advantage for the design of electrodes with less problems of inteferents since the optimum redox potential of the catalyst changes depending on the target molecule, as shown for the oxidation of thiols [40,[44][45][46][47]. For thiocyanate, the development of an amperometric sensor based on cobalt phthalocyanines modified electrodes, can represent an attractive and efficient tool for performing environmental and biological analysis in a simple, fast and low-cost way.…”

“…A long mathematical derivation has been described in detail in previous publications [45][46][47] for the oxidation of several thiols, but it can be demonstrated that q, the coverage of thiocyanate molecules bound to the Co sites is given by:…”

Metallophthalocyanine-based molecular materials as catalysts for electrochemical reactions

“…For example studies using electropolymerized aminophenyl and hydroxyphenyl cobalt porphyrins have shown some activity [292,344] but they are less active than phthalocyanines. These differences in behavior have been attributed to a different electrocatalytic mechanism and/or to differences in the polymer film conductivities.…”

Formation and Bacteriostatic Properties of Ag(II) and Cu(II) Complexes of meso-Tetrakis(N-methyl-4-pyridyl)-porphyrin Tetratosylate

“…Комплексы металлопорфиринов привлекают все большее внимание ввиду проявления ими каталитичес-кой [1][2][3][4][5][6][7] и биологической [8][9] активности. Они являются перспективными исходными соединениями для синтеза ряда лекарственных препаратов для фотодинамиче-ской диагностики и терапии раковых опухолей.…”