State of partial oxidation of the regioregular sexi (3-octyl thiophene) oligomer in solid phase on electrode surface

Springer Science and Business Media LLC - Tập 10 - Trang 134-139 - 2005
Jerzy Zak1, Mieczyslaw Lapkowski1,2, Stephane Guillerez3, Gerard Bidan3
1Department of Chemistry, Silesian University of Technology, Gliwice, Poland
2Institute of Coal Chemistry, Polish Academy of Sciences, Gliwice, Poland
3Département de Recherche Fondamentale sur la Matiere Condensée SI3M/EM, Grenoble Cedex 09, France

Tóm tắt

An existence of a new, stable oligomer state of the solid film is reported, which is produced under electrochemical conditions. In this state, a formal charge exchanged in the redox process is about one-half of electron per oligomer molecule. The procedure, which allows controlling precisely the amount of oligomer on the electrode surface, is proposed that together with the coulometric evaluation of the electric charge provides the number of electrons involved in a redox process. This is demonstrated for a case of α-monochloro-substituted regioregular sexi (3-octylthiophene) oligomer (6OTCl). The electrochemical results are discussed together with UV–Vis–NIR spectroelectrochemical data obtained for both solution and solid phase that support the proposed interpretation.

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