In situ FTIR spectroelectrochemical characterization of n- and p-dopable phenyl-substituted polythiophenes
Artikel i vetenskaplig tidskrift, 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.

evidences

spectroscopy

cells

bulk

Författare

T. Yohannes

Addis Ababa University

S. Lattante

Johannes Kepler Universität Linz (JKU)

H. Neugebauer

Johannes Kepler Universität Linz (JKU)

N. S. Sariciftci

Johannes Kepler Universität Linz (JKU)

Mats Andersson

Chalmers, Kemi- och bioteknik, Polymerteknologi

Physical Chemistry Chemical Physics

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

Vol. 11 6283-6288

Ämneskategorier

Fysikalisk kemi

Atom- och molekylfysik och optik

DOI

10.1039/b905499p