A Viologen/Ruthenium Oxide-Based Microelectrochemical Diode with pH- Dependent Current-Voltage Characteristics

Abstract

A procedure for selectively derivatizing two adjacent (approx. 1.4 microns apart) microelectrodes with RuOx and the redox polymer derived from hydrolysis of N,N'-bis(p-(trimethoxysilyl)benzyl)-4,4' bipyridinium dichloride, (BPQ2+), n' to yield a physical RuOx/(BPQ2+)n junction is reported. Such a junction functions as a pH-dependent diode by virtue of the redox properties of the materials employed. A diode-like current voltage curve obtains, because charge transport across the RuOx/(BPQ2+)n junction is effectively unidirectional: the oxidized RuOx can oxidize the reduced viologen, but the reduced RuOx can oxidize the reduced viologen.

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Document Details

Document Type
Technical Report
Publication Date
May 16, 1990
Accession Number
ADA221961

Entities

People

  • Mark S. Wrighton
  • Martin O. Schloh

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aqueous Solutions
  • Buffers (Chemistry)
  • Chemical Vapor Deposition
  • Chemistry
  • Conductive Polymers
  • Electrical Properties
  • Electrolytes
  • Engineering
  • Equations
  • Films
  • Massachusetts
  • Materials
  • Military Research
  • Oxidation Reduction Reactions
  • Steady State
  • Transport Properties
  • United States

Fields of Study

  • Chemistry

Readers

  • Electrochemical Surface Science
  • Electronics Engineering