Immobilization support, process for producing the same, electrode, process for producing the same, electrode reaction utilizing apparatus and process for producing the same

• US 7,520,970 B2
• Filed: 05/21/2004
• Issued: 04/21/2009
• Est. Priority Date: 06/05/2003
• Status: Active Grant

• Current Assignee: Murata Manufacturing Co Limited
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Sato, Atsushi, Kano, Kenji, Ikeda, Tokuji
• Primary Examiner(s): Lilling; Herbet J.
• Application Number:
  US10/555,368
• Publication Number:
  US 20060105418A1
• Time in Patent Office: 1,796 Days
• Field of Search: None
• US Class Current: 204/403.1
• CPC Class Codes: C12Q 1/003 Functionalisation
• CPC Class Codes: H01M 4/86 Inert electrodes with catalytic activity, e.g. for fuel cells
• CPC Class Codes: H01M 8/16 Biochemical fuel cells, i.e. cells in which microorganisms function as catalysts
• CPC Class Codes: Y02E 60/50 Fuel cells
• CPC Class Codes: Y10S 435/817 Enzyme or microbe electrode

Abstract

An immobilization carrier containing an electron acceptor compound is used in addition to glutaraldehyde and poly-L-lysine to immobilize an enzyme and an electron acceptor compound simultaneously to an electrode. For example, here are used diaphorase as the enzyme and 2-amino-3-carboxy-1,4-naphthoquinone (ACNQ) as the electron acceptor compound.

Claims

1. An electrode comprising:

an immobilization carrier which contains a first compound having at least two groups capable of polymerizing with amino groups or amino groups, and a second compound containing amino groups or amino groups;

an electron acceptor compound wherein the electron acceptor compound is 2-amino-3-carboxy-1,4-naphthoquinone (ACNQ), being bonded to at least one of the first compound and second compound of the immobilization carrier; and

an enzyme;

wherein the enzyme is diaphorase.

2. An electrode according to claim 1, wherein the immobilization carrier has a structure in which the first compound and second compound are coupled by cross-linking.