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Home  >  Journal list  >  Polymer Journal  >  Vol.33  No.7 (2001)  >  pp.514-514

Polymer Journal
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Electrogeneration and Characterization of Poly(3-methylthiophene)

José Vicente Sanchez1), Raquel Diaz2), Pilar Herrasti1) and Pilar Ocon1)
1) Departamento de Química Física Aplicada, Universidad Autónoma de Madrid, Madrid 28049, Spain
2) Departamento de Física Aplicada, Universidad Autónoma de Madrid, Madrid 28049, Spain


ABSTRACT:  Results for a conducting polymer poly(3-methylthiophene) are presented with demonstration that the electrochemical deposition proceeds favourably through 3D instantaneous nucleation and growth. The polymer film is insulating at sufficiently negative 0.1 V or positive 1.6 V electrochemical potentials in propylene carbonate + LiClO4 solution. When the solution was H2SO4 the film was insulating in 0.5 V or 1.1 V. The macrogrowth occurred in three dimensions and showed disordered rough structures. According to the results for t<1 s the fractal dimension Ds=2.5 was obtained and for t>1 s this parameter was 2.0. The band gap energy of these material is ≈1 eV characteristic for the polymer materials in oxidized state. This films have a lot of free charge carriers and this characteristic confers conductive properties to the material.


Keyword:
Conducting Polymers/ Electropolymerization/ Fractal Dimension/ Band Gap

Published online: May 07, 2003
© Copyright, 2003 by The Society of Polymer Science, Japan

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