Contribution À L’étude De L’effet D’inhibition De Quelques Dithiolethiones Durant L‘électropolymérisation De L’aniline

Résumé: The work presented in this memory report consist in the contribution of an electrochemical study of the inhibitive effect of some compounds 1,2-dithioles: (a): 5-(4-methoxyphenyl)-1.2-dithiole-3-thione ; (b) : Benzo-1.2-dithiole-3-thione (c): 4.5-dimethyl-1.2- dithiole-3-thione ; (d) : 3-aminophenyl-5-(4-methoxyphenyl) On the radicalar actions and exactly the électropolymérisation of aniline, the study is subdivided into three stages which are the following ones: 1 - (cathodic) electrochemical study of thiolinic compounds mentioned above and the determination of the domains of their electro-activity in working conditions indeed 2-study of the reaction of the électropolymérisation and the mechanism concerning its formation(training). 3- At the end we proceeded to a test on the inhibitive effect of some dithioles substituted in position 5 during the electropolymerisation of the aniline; the inhibitive effect was noticed for compounds a, b and c, whereas the compound d showed a catalytic effect which is favorable to the éléctropolymerisation. It is to note that the polymer PANI was synthetized in the laboratory by chemical way in starting from some aniline as example of reaction of polymérisation. In Conclusion, we can say that compounds a, b and c have an inhibitive antiradicals effect whereas the aminic compound d facilitates the anodic oxidation of the PANI.

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