Accession Number:

ADA222024

Title:

Potential Dependence of the Conductivity of Highly Oxidized Polythiophenes, Polypyrroles, and Polyaniline: Finite Windows of High Conductivity

Descriptive Note:

Interim technical rept. no. 39, May 1989-May 1990

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE DEPT OF CHEMISTRY

Report Date:

1990-05-16

Pagination or Media Count:

64.0

Abstract:

In situ measurements of the relative conductivity of polythiophenes, polyaniline, and polypyrroles as a function of electrochemical potential reveal that they have finite potential dependent windows of high conductivity. The polymers studied, polyaniline and I-VI, are prepared by anodic polymerization onto microelectrode arrays of the appropriate monomer thiophene, I, 3- methylthiophene, II, 3-phenylthiophene, III, 1-Methyl-1-3-thiophene-3-yl- propyl-4,4-bipyridinium, IV, 3,4-dimethylpyrrole, V, and N-methylpyrrole, VI. The use of liquid SO2electrolyte medium as the electrochemical solvent makes it possible to define the window of high conductivity because it allows the polymers to be reversibly oxidized to a greater extent than has previously been achieved.

Subject Categories:

  • Organic Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE