ELECTRODE FOR SUPEROXIDE ANION AND SENSOR INCLUDING THE SAME

摘要

An electrode for superoxide anion characterized by comprising a conductive member and, superimposed on a surface thereof, a film resulting from electrolytic polymerization of a metal thiofurylporphyrin/axial ligand complex; and a sensor for measuring superoxide anion concentration, including the same. This electrode for superoxide anion, by virtue of not only the excellent performance of electrode provided with the metal porphyrin complex polymer film but also the presence of axial ligand, can prevent poisoning by poisoning substances such as hydrogen peroxide. Accordingly, in any of in-vitro and in-vivo environments, this electrode for superoxide anion enables detection of superoxide anion radicals without suffering any influence from poisoning substances such as hydrogen peroxide. Moreover, the quantitative assay of superoxide anions can be performed by the use of this electrode for superoxide anion in combination with a counter electrode or reference electrode. Thus, this electrode for superoxide anion can find wide applicability in various fields.