Preparation of Poly(thionine)-Modified Electrode and Its Application to an Electrochemical Detector for the Flow-Injection Analysis of NADH.

• TANAKA Koichiro

  Department of Electronic Chemistry, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology

• IKEDA Shin

  Department of Applied Chemistry, Faculty of Technology, Tokyo University of Agriculture and Technology

• OYAMA Noboru

  Department of Applied Chemistry, Faculty of Technology, Tokyo University of Agriculture and Technology

• TOKUDA Koichi

  Department of Electronic Chemistry, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology

• OHSAKA Takeo

  Department of Electronic Chemistry, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology

抄録

Poly(thionine)-modified electrodes have been prepared using basal-plane pyrolytic graphite, glassy carbon and In-Sn oxide conducting glass as electrode substrates by an electrooxidative polymerization of thionine in both aqueous and acetonitrile media. It was found that the prepared films, the surface concentration of which can be controlled over the range of ca. 10^-10-10^-8mol cm^-2 by appropriately choosing the electropolymerization conditions (e.g., solvent, concentration of thionine and electrolysis time), are electroactive (the formal potential is ca. 0.0V vs. Ag/AgCl at pH 7.0) and chemically stable. The modified electrodes exhibited excellent electrocatalysis for NADH oxidation in neutral aqueous solutions, with an activation overpotential which is ca. 400mV lower than that of a bare electrode. Further, the modified glassy carbon electrode was found to be promising as an amperometric detector for the flow-injection analysis of NADH, typically with a dynamic range of 5μM-1mM.

収録刊行物

• Analytical Sciences

  Analytical Sciences 9 (6), 783-789, 1993

  社団法人 日本分析化学会

キーワード

• Poly(thionine)
• electrocatalysis
• NADH
• FIA detector
• modified electrode
• electropolymerization

詳細情報

• CRID: 1390001204255639552
• NII論文ID: 130003416928
• DOI: 10.2116/analsci.9.783
• COI: 1:CAS:528:DyaK2cXhtVSrtLw%3D
• ISSN: 13482246
• ISSN: 09106340
• ISSN: http://id.crossref.org/issn/09106340
• Web Site: https://link.springer.com/content/pdf/10.2116/analsci.9.783.pdf
• Web Site: https://link.springer.com/article/10.2116/analsci.9.783/fulltext.html
• Web Site: http://www.jstage.jst.go.jp/article/analsci1985/9/6/9_6_783/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可