Electronic and Ionic Transport in Polymers
Abstract
The following results have been achieved or elucidated during 1987- 1988: Charge transport properties of electrochemically prepared poly(3- methylthiophene) thin films depends on the morphology of the film; soluble transition metal bisdithiolene polymers are electroactive with three distinct oxidation states; carbon felt electrodes allow fairly large quantities of soluble poly(3-hexylthiophene) to be prepared; the electrical properties of anion exchanged, doped polypyrroles are anion independent; composite poly(pyrrole-Kevlar sulfonate) films, where the dopant is a thermally stable polyelectrolyte modified Kevlar, have good electrical conductivities of up to 1 S/cm; the diffusion coefficients for anion exchange in polypyrrole are a function of polymer morphology; proton transport accompanies switching of polypyrrole from the conducting to the insulating state; redox switching of polypyrrole modifies the luminescense behavior of an interfacial probe (e.g. pyrene) and can be monitored using fluorescent dopant anions; quantum mechanical calculations indicate that steric effects in polyisothianaphthene and polyisonaphthothiophene renders them non-planar and increases the band gap; the liquid crystalline properties of aliphatic/aromatic polyazomethine ethers depend on the configuration of atoms in the isomeric mesogenic core and the LC properties of some metal chelates depends on the nature of the transition metal.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 04, 1988
- Accession Number
- ADA200481
Entities
People
- Dennis S. Marynick
- John R. Reynolds
- Krishnan Rajeshwar’
- Martin Pomerantz
- Timothy D. Shaffer
Organizations
- University of Texas at Arlington