Accession Number : ADA187253

Title :   Electronic and Ionic Transport in Polymers.

Descriptive Note : Annual rept. no. 1, 15 Sep 86-30 Sep 87,

Corporate Author : TEXAS UNIV AT ARLINGTON DEPT OF CHEMISTRY

Personal Author(s) : Pomerantz, Martin ; Reynolds, John R ; Rajeshwar, Krishnan ; Marynick, Dennis S ; Shaffer, Timothy D

PDF Url : ADA187253

Report Date : 30 Sep 1987

Pagination or Media Count : 6

Abstract : The synthesis and study of electrically conducting polymers, particularly polyheterocycles, is being carried out with the ultimate goal of producing materials with a variety of electronic and ionic transport properties while, at the same time, gaining an improvement in their processibility. Polymers based on monomer systems containing a high density of attached dipoles are being developed with the goal of producing materials with elevated permittivities while retaining low loss behavior. Polymers containing phosphorus, nitrogen and organic groups in the main chain and polyether sidechains are being prepared and studied as ion conductors for possible solid electrolyte applications. The kinetics of the insulating to conductive switching process in conducting polymers is being examined including the development of techniques to probe the ionic fluxes which accompany the redox processes in the polymer films. Theoretical calculations (PRDDO and ab initio) are being used to calculate structures, conformations, spin densities, HOMO-LUMO gaps, and potential energy surfaces for a wide variety of heterocyclic monomers and oligomers and will be used to predict the site of electrochemical polymerization and to understand how various substituents affect the electronic structures of the polymers. Finally, main-chain liquid crystalline polymers which contain potential electroactive centers are being synthesized. Some of these will contain oliogomeric unsaturated organic groups.

Descriptors :   *ELECTRON TRANSPORT, *IONS, *POLYMERIC FILMS, *POLYMERS, BEHAVIOR, CHAINS, COMPUTATIONS, CONDUCTIVITY, DENSITY, DIPOLES, ELECTRIC CONDUCTORS, ELECTROCHEMISTRY, ELECTRONIC EQUIPMENT, HETEROCYCLIC COMPOUNDS, HIGH DENSITY, LOW LOSS, MONOMERS, NITROGEN, ORGANIC RADICALS, OXIDATION REDUCTION REACTIONS, PHOSPHORUS, POLYMERIZATION, POTENTIAL ENERGY, PYRROLES, SITES, SOLID ELECTROLYTES, SPINNING(MOTION), STRUCTURAL PROPERTIES, SURFACES, SWITCHING, SYNTHESIS(CHEMISTRY), THEORY, TRANSPORT PROPERTIES

Subject Categories : Polymer Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE