Metallo-complexes metal phthalocyanines

Among the main goals of electrochemical research are the design, characterization and understanding of electrocatalytic systems, (1-2) both in solution and on electrode surfaces. (3.) Of particular importance are the nature and structure of reactive intermediates involved in the electrocatalytic reactions.(A) The nature of an electrocatalytic system can be quite varied and can include activation of the electrode surface by specific pretreatments (5-9) to generate active sites, deposition or adsorption of metallic adlayers (10-111 or transition metal complexes. (12-161 In addition the electrode can act as a simple electron shuttle to an active species in solution such as a metallo-porphyrin or phthalocyanine. 

Macrocyclic metal complexes are the principal materials incorporated in the dendrimer structure (for reviews see [192,193]). Examples are metallo dendrimers with a porphyrin core [194-204], with a phthalocyanine core [205-209], with crown ethers in the repeat unit [210-212] or with a cyclic amine core [213],... 

Other researchers have reported electrochemical nitrite reduction using aquocobalamin " and water-insoluble metallo-phthalocyanines absorbed onto electrodes. Nyokong and coworkers found that the potential for catalytic nitrite reduction varied with metal in a series of metallo-phthalocyanine complexes adsorbed onto a glassy carbon electrode (GCE) in basic solutions, Cu(Pc) > Fe(Pc) > Ni(Pc) > Co(Pc) > Mn(Pc) > Zn(Pc). ... 

---