Electronic and Ionic Transport in Polymers
Abstract
A self-doped copolymer of pyrrole, poly(pyrrole-co(3-(pyrrole-1-yl) propanesulfonate), in which the charge compensating counterion is covalently bound to the polymer main chain has been prepared and the charge transport in the polymer during redox switching has been investigated using chronocoulometry and microgravimetry as a function of supporting electrolyte. The results are compared with the behavior of polypyrrole under similar conditions. It is shown that within this new family of materials called self-doped conductive polymers ion mobility is restricted to cationic species and thus the polymer can be viewed as an ion specific membrane. This is in contrast to the case of polypyrrole where a more complex behavior prevails. The charge passed during the chronocoulometric experiment varies as t superscript alpha where 0.2 < alpha < 0.9 and the ion mobility is sensitive to cation size.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 12, 1988
- Accession Number
- ADA197193
Entities
People
- Charles K. Baker
- John R. Reynolds
- Martin Pomerantz
- N. S. Sundaresan
- Sanjay Basak
Organizations
- University of Texas at Arlington