Electrochemical properties of benzylmercapto and dodecylmercapto tetra substituted nickel phthalocyanine complexes: Electrocatalytic oxidation of nitrite

Electrochemical Characterization of Self‐Assembled Monolayer of a Novel Manganese Tetrabenzylthio‐Substituted Phthalocyanine and Its Use in Nitrite Oxidation

“…Ion barrier factor, calculated using Equation 1 gives a value close to unity. This result confirms the fact that MnPc(SPh) 4 -SAM is well packed and acts as an effective barrier to ion permeability, as it was previously shown with other phthalocyanine-SAM modified electrodes [27,28].…”

Synthesis and electrochemical properties of benzyl-mercapto and dodecyl-mercapto tetrasubstituted manganese phthalocyanine complexes

“…Both complexes were found to be soluble in less polar solvents such as DCM and chloroform while only complex 3a which has benzyl-mercapto group as the ring substituents dissolved in the more polar solvents such as DMSO and DMF. The nonsolubility of complex 3b in DMSO and DMF was also observed before for MTDMPc (M = Fe, Co and Ni) [20] and [21] and was attributed to the presence of the highly nonpolar long dodecylthiol alkyl chains.…”

“…The next two processes I′ and I are in the range for ring [15] oxidation in MPc complexes, Table 1 and are assigned to Pc − /Pc 2− and Pc 0 /Pc − , respectively. Ring oxidation of thiol substituted MPc complexes often results in decomposition [21] hence the lack of reversibility of the oxidation processes (especially I′). Couple I is more reversible than I′, but it is near the end of the potential range for the system.…”

Electrochemical Determination of Nitrite Using a Gold Nanoparticles-modified Glassy Carbon Electrode Prepared by the Seed-mediated Growth Technique

“…The relative standard deviation (RSD) was calculated as 2.4% and only a small decrease of current (about 8%) was observed after 22 measurements, illustrating an excellent stability of Au/GCE for electrochemical determination of nitrite in wastewater. The operational stability of Au/GCE in nitrite determination is much better than that of a metallophthalocyanines-modified electrode, 11 a carbon nanotube-modified electrode 35 or an enzyme-modified electrode. 19 Moreover, the long-term stability of Au/GCE was also studied by storing the electrode for 7 days at room temperature.…”