Accession Number : ADA194318

Title :   The Electrochemical Behavior in Aqueous Media of Conducting Polymers. 2. The Insoluble Fractions Obtained on the Cu(II) Catalyzed Polymerization of (2,5-Dibromo-3-Group IV Substituted) Thiophenes.

Descriptive Note : Technical rept.,

Corporate Author : UTAH UNIV SALT LAKE CITY DEPT OF CHEMISTRY

Personal Author(s) : Pons, Stanley ; Czerwinski, A ; Cunningham, D ; Amer, A ; Schrader, J

PDF Url : ADA194318

Report Date : 30 Jul 1986

Pagination or Media Count : 34

Abstract : The chemical polymerization of (2,5-dibromo-3-substituted) thiophenes utilizing Cu(II)Cl2 as a copromoter yields an amorphous insoluble polymer fraction which exhibits a very high electronic conductivity. These materials have been used as electrode materials. The redox chemistry of the Cu(II) containing polymer in contact with supporting electrolyte only shows a distinct internal (Cu(II)/Cu(I) cyclic voltammetric wave. No redox behavior for the thiophene ring system is observed. This material is very stable in aqueous media and appears to be conducting at positive and negative electrode potentials (contrary to the redox response of electrodeposited polythienylene films). The lack of 3-substituent steric effects is discussed. The similarities and, more important, the dissimilarities of the properties of these polymers and Cu(II)-dithiolate complexes are also discussed.

Descriptors :   *OXIDATION REDUCTION REACTIONS, *POLYMERIZATION, *POLYMERS, *THIOPHENES, BEHAVIOR, CHEMICALS, CHEMISTRY, CONDUCTIVITY, ELECTROCHEMISTRY, ELECTRODES, ELECTROLYTES, ELECTRONS, HIGH RATE, LIQUIDS, MATERIALS, MEDIA, REPRINTS, RINGS

Subject Categories : Polymer Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE