Electrochemistry and polymerization mechanisms of thiophene-pyrrole-thiophene oligomers and terthiophenes. Experimental and theoretical modeling studies
Article Abstract:
The electrochemical properties of several thiophene-pyrrole-thiophene oligomers have been studied by cyclic voltammetry and double-potential-step chronoamperometry. Results show that substitution by a methyl group lowers the oxidation potential when the methyl is introduced on the beta'-positions of the mixed oligomers. The cation radical undergoes a coupling reaction in solution leading to a dimer or a polymer depending on the starting monomer. Coupling between two cation radicals has been observed in the alpha-unsubstituted oligomers.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
User Contributions:
Comment about this article or add new information about this topic:
Characterization of Pt nanoparticles deposited onto carbon nanotubes grown on carbon paper and evaluation of this electrode for the reduction of oxygen
Article Abstract:
Multiwalled carbon nanotubes (MWCNTs) are grown on the fibers of a commercial porous carbon paper that are used as carbon-collecting electrodes in fuel cells and the Pt nanoparticles are characterized by cyclic voltammetry, transmission electron microscopy and X-ray photoelectron spectroscopy. Pt deposited onto loose MWCNTs all spread on the same side of the carbon paper is a better electrode choice for [H.sub.2]/[O.sub.2] fuel cells.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2006
User Contributions:
Comment about this article or add new information about this topic:
Electron transfer through a modified electrode with a fractal structure: Cyclic voltammetry and chronoamperometry responses
Article Abstract:
In case of chronoamperometry and linear sweep voltammetry, the problem of transfer by electron hopping through a volumic modified electrode with a fractal structural is investigated. The results based on theoretical treatment show that currents in chronoamperometry and the peak currents in cyclic voltammetry both depend linearly on a biligoarithmic scale with time and scan rate.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2001
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Role of triple bond in 1,2-diphenylacetylene crystal: A combined experimental and theoretical study. Atomic charges for classical simulations of polar systems
- Abstracts: Adsorption of 2-aminobenzothiazole on colloidal silver particles: An experimental and theoretical surface-enhanced Raman scattering study
- Abstracts: Molecular modeling of crystalline oligothiophenes: Testing and development of improved force fields. Modeling of molecular packing and conformation in oligofluorenes
- Abstracts: Photostimulated generation of defects and surface reactions on a series of wide band gap metal-oxide solids. Pyrene micropartitioning and slubilization by sodium dodecyl sulfate complexes with poly(ethylene glycol)
- Abstracts: Reduction of iron oxide catalysts: The investigation of kinetic parameters using rate perturbation and linear heating thermoanalytical techniques