섬유

micro glucose sensors using electron mediators immobilized on a polypyrrole-modified electrode

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 348
an amperometric micro enzyme electrode for the analysis of glucose is described. micro gold electrodes fabricated by the sputtering methods are used as transducers of micro glucose sensors glucose oxidase (god) is strongly adsorbed onto a polypyrrole film electropolymerized in aqueous solution. 1-1'-dimethylferrocene is used as a mediator of electron transfer between adsorbed god and the polypyrrole-modified electrode. glucose determination within a wide range (2.5-30 mm) is possible. the stability of the enzyme electrode has been improved with a lower electrochemical potential (0.1 v versus sce) over 10 days. by comparison, micro electrodes with a polypyrrole film, which are prepared from an acetonitrile solution of pyrrole, show no response to glucose. scanning electron microscopy reveals that the surface of the polypyrrole film prepared in kcl aqueous solution is much larger than that in acetonitrile solution
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