Structural studies of conducting polymer solutions and films: Poly(3-methylthiophene)

Journal Article · Sun Jan 01 04:00:00 EST 1989 · Macromolecules; (United States)

DOI:https://doi.org/10.1021/ma00195a043· OSTI ID:7126851

Murray, D P; Kispert, L D; Petrovic, S ^[1]; Frommer, J E ^[2]

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1. Univ. of Alabama, Tuscaloosa, AL (United States). Chemistry Dept.
2. Almaden Research Center, San Jose, CA (United States). IBM Research Division

3-Methylthiophene has been polymerized by AsF[sub 5] in AsF[sub 3] solution to illustrate the complexity of the chemical and physical interactions which govern conducting polymer solubility and final film properties. The conducting polymer solutions and the electrically conductive films cast from them have been analyzed via solution- and solid-state NMR and EPR and SEM/EDX techniques. The AsF[sub 6][sup [minus]] ion that has long been proposed as a dopant counterion has been identified at low dopant levels. Sulfur-centered radicals are observed in solution, and carbon-centered radicals are observed in the corresponding cast films. These carbon-based radicals appear to be uncorrelatable with the conductivity of the cast films. From SEM measurements, the electrical and mechanical properties of the electrically conductive poly(3-methylthiophene) films cast from solution are found to be dependent on the sample morphology.

• OSTI ID: 7126851
• Journal Information: Macromolecules; (United States), Journal Name: Macromolecules; (United States) Vol. 22:5; ISSN MAMOBX; ISSN 0024-9297
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360600* -- Other Materials
ARSENIC COMPOUNDS
ARSENIC FLUORIDES
CHEMICAL REACTIONS
DATA
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
EXPERIMENTAL DATA
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
HETEROCYCLIC COMPOUNDS
INFORMATION
MECHANICAL PROPERTIES
MORPHOLOGY
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC POLYMERS
ORGANIC SULFUR COMPOUNDS
PHYSICAL PROPERTIES
POLYCYCLIC SULFUR HETEROCYCLES
POLYMERIZATION
POLYMERS