Comparative Electronic Properties of Two AryleneCyanovinylene Isomers and of Their Respective Electrogenerated Polymers

Two arylene-cyanovinylene isomers formed by a phenyl unit substituted in para or meta positions by two cyanovinylene-methylthiophene were synthesized. Their main physicochemical properties were studied in order to point out the influence of the nature of the substitution (para vs meta) of the centra...

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Published inInternational journal of electrochemical science Vol. 9; no. 12; pp. 7382 - 7393
Main Authors Mosbah, Salima, Beghdouche, Ammar Khelifa, Benmekhbi, Lotfi, Berthelot, Joëlle Rault, Bencharif, Leila
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.12.2014
Subjects
arylene-dicyanovinylene
Electroactive polymer
Electropolymerization
p- doping process, n-doping process
Electroactive polymer
p- doping process, n-doping process
Electropolymerization
arylene-dicyanovinylene
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Summary:Two arylene-cyanovinylene isomers formed by a phenyl unit substituted in para or meta positions by two cyanovinylene-methylthiophene were synthesized. Their main physicochemical properties were studied in order to point out the influence of the nature of the substitution (para vs meta) of the central phenyl unit on the electronic properties of the two isomers. The anodic electropolymerization of the two compounds was also studied with a main emphasis on the electrochemical behavior of the derived polymers showing that the specific behavior of the para-substituted isomer is maintained in its polymer leading to a polymer with a lower bandgap (1.95 eV) than the polymer obtained from the meta-substituted isomer (2.16 eV).
ISSN:1452-3981
1452-3981
DOI:10.1016/S1452-3981(23)10975-8