Polypyrrole film electrode incorporating

Polypyrrole Film Electrode Incorporating Glucose Oxidase... 

Z. Sun and H, Tachikawa, Polypyrrole film electrode incorporating glucose oxidase, in Biosensors and Chemical Sensors. Optimizing Performance Through Polymeric Materials (P. G. Edelman and J. Wang, eds.), ACS Symp. Ser. 487, Am. Chem. Soc., Washington, DC, 1992, p. 134. 

The electrode material may become the precursor of noble metals nanoparticles. Polypyrrole films containing functional groups, such as 4,4 -dipyridyl, alkylam-monium, may serve as protectors in this case. Bimetallic Pd-Pt or Pd-Rh nanoparticles incorporated into such films are also used for the electrocatalytic hydrogenation. Fine dispersions of iron powders (-200 nm) formed electrochem-... 

Figure /. 3-D absorbance spectra of a polypyrrole film electroformed at a gold electrode at a constant potential (0.3 V/MSE) in 0.5 M H2SO4 + 0.1 M pyrrole (a) without and (b) with incorporation of tetrasulfonated iron phthalocyanine.

Pickup et al. [2] have investigated the feasibility of constructing a polypyrrole/ mercury/mercury chloride reference electrode. Initially, polypyrrole/mercury/mer-cury chloride films were obtained by electrodeposition of the polypyrrole on a mercury pool with an area 27 cm from the solution containing 0.5 M sodium para-toluene sulfonate, 0.3 M pyrrole, and 1 M sodium chloride all dissolved in sodium acetate buffer with pH = 4.5. Deposition was conducted galvanostatically using 20 mA for 3.5 h. It was shown that in this procedure, insufficient amount of merciuyr was incorporated in the polypyrrole film for further reaction with chloride ions to yield a mercury/mercury chloride half cell. 

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