A1 Refereed original research article in a scientific journal
SCHEME FOR THE ANODIC AND CATHODIC TRANSFORMATIONS IN POLYTHIOPHENES
Authors: VISY C, LUKKARI J, KANKARE J
Publisher: AMER CHEMICAL SOC
Publication year: 1993
Journal: Macromolecules
Journal name in source: MACROMOLECULES
Journal acronym: MACROMOLECULES
Volume: 26
Issue: 13
First page : 3295
Last page: 3298
Number of pages: 4
ISSN: 0024-9297
DOI: https://doi.org/10.1021/ma00065a008
Abstract
The unique symmetric voltammetric behavior of anodically and cathodically conducting 3'-thienylterthiophenes supports the analogous interpretation of the anodic and cathodic transformations of thiophene type polymers. The splitting of the anodic current peak during the reoxidation of the cathodically transformed film is connected to the presence of more conjugated segments presumably because of the side-chain thiophenyl ring. According to the scheme both the anodic and cathodic processes leading to conductive forms start with the electrochemical oxidation or reduction of more conjugated segments. This can explain the blue shift in the absorbance of the neutral polymer in the UV-visible spectra during the insulating-conducting transformation.
The unique symmetric voltammetric behavior of anodically and cathodically conducting 3'-thienylterthiophenes supports the analogous interpretation of the anodic and cathodic transformations of thiophene type polymers. The splitting of the anodic current peak during the reoxidation of the cathodically transformed film is connected to the presence of more conjugated segments presumably because of the side-chain thiophenyl ring. According to the scheme both the anodic and cathodic processes leading to conductive forms start with the electrochemical oxidation or reduction of more conjugated segments. This can explain the blue shift in the absorbance of the neutral polymer in the UV-visible spectra during the insulating-conducting transformation.
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