In situ FTIR spectroelectrochemical characterization of n- and p-dopable phenyl-substituted polythiophenes
Journal article, 2009

In situ attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroelectrochemistry during oxidation (p-doping) and reduction (n-doping) of three phenyl-substituted polythiophenes, namely POPT, PEOPT and POMeOPT is presented. All the three phenyl substituted polythiophenes show both n- and p-doping. The infrared active vibration (IRAV) patterns obtained during electrochemical oxidation (p-doping) and reduction (n-doping) are compared. HOMO and LUMO energy levels are estimated from cyclic voltammetric experiments and from IRAV patterns during oxidation and reduction. A comparison shows that the standard graphical procedure to determine the onset of oxidation and reduction peaks in the cyclic voltammogram can be improved using in situ spectroscopy.






T. Yohannes

Addis Ababa University

S. Lattante

Johannes Kepler University of Linz (JKU)

H. Neugebauer

Johannes Kepler University of Linz (JKU)

N. S. Sariciftci

Johannes Kepler University of Linz (JKU)

Mats Andersson

Chalmers, Chemical and Biological Engineering, Polymer Technology

Physical Chemistry Chemical Physics

1463-9076 (ISSN) 1463-9084 (eISSN)

Vol. 11 29 6283-6288

Subject Categories

Physical Chemistry

Atom and Molecular Physics and Optics



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