Cobalt phthalocyanine/cellulose acetate chemically modified electrodes for electrochemical detection in flowing streams. Multifunctional operation based upon the coupling of electrocatalysis and permselectivity

The use of chemically modified electrodes for liquid chromatography and flow‐injection analysis

“…The incorporation of electrocatalytic centers into the foregoing polymeric coatings can provide additional advantages of chemical analysis. At these new microstructures, CA [73] or Nafion [66] serves as a template that establishes the structure and transport characteristics, while CoPC serves to enhance the electron transfer kinetics. The mixed CoPC/CA or CoPC/Nafion coating was found to present properties superior to those of either component alone.…”

Electrocatalytic response of poly(cobalt tetraaminophthalocyanine)/multi-walled carbon nanotubes-Nafion modified electrode toward sulfadiazine in urine

“…Mediators such as rhodium particles deposited polyvinyl pyridine film (Shaidarova et al, 2004), palladium particles deposited polyaniline film (Shaidarova et al, 2006), cobalt phthalocyanine complex (Wang et al, 1988), and ruthenium oxide-ruthenium cyanide composites film (Shaidarova et al, 2008; were successfully used as the electrode modifier for enhancing electron-transfer kinetics and lowering the overvoltage. Modified electrodes such as carbon nanotubes (CNTs)-Nafion modified electrodes (Issac and Kumar, 2009), boron-doped electrodes (Preechaworapun et al, 2006;Souza et al, 2008), metalloporphyrin modified electrodes (Joseph and Kumar, 2010), bismuth film electrodes , and amperometric DNA-peroxidase sensors (Evtugyn et al, 2005) were designed for sulfonamide antibiotics determination.…”

“…Surface-bound mediators, such as gold nanoparticles (Li and Lin, 2007), metalloporphyrins (Chen et al, 2001), and metallophthalocyanines (Wang et al, 1988), were covalently or non-covalently stabilized onto CNTs fibers to acquire fantastic synergistic effect in electrocatalytic reactions. As versatile electrocatalysts, cobalt phthalocyanine (Co II Pc) complexes were shown to decrease the electro-oxidation potential by several hundred millivolts toward a wide variety of oxidizable species (Wang et al, 1988 (Li and Guarr, 1989).…”

Cobalt(II) phthalocyanine bonded to 3-n-propylimidazole immobilized on silica gel surface: preparation and electrochemical properties

“…It is possible to extend many applications in solution phase of these complexes to a solid phase by an immobilization process on an inert matrix surface and by an impregnation or chemical bonding procedures 4 . Complexes immobilized by an impregnation procedure on an inert matrix surface have been used to prepare chemically modified electrodes viewing numerous electrocatalytic reactions [5][6][7][8][9][10][11][12] . Another procedure has been to immobilize the phthalocyanine or porphyrine complexes by a chemical bonding of the central metal atoms to basic groups grafted on solid surfaces [13][14][15][16][17][18][19][20][21] .…”