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Title: Infrared spectroelectrochemical investigations on the doping of soluble poly(isothianaphthene methine) (PIM)
Authors: Neugebauer, H
Kvarnstrom, C
Brabec, C
Sariciftci, NS
Wudl, F
Luzzati, S
Issue Date: 1999
Source: JOURNAL OF CHEMICAL PHYSICS, 110(24). p. 12108-12115
Abstract: Attenuated total reflection Fourier transform infrared (ATR-FTIR) investigations on the doping processes in substituted poly(isothianaphtene methine) (PIM), a new low band-gap conjugated polymer, are reported. The doping was studied in situ during chemical p-doping (oxidation) by iodine and during electrochemical p-doping (oxidation) and n-doping (reduction). During both signs of doping, infrared active vibrational (IRAV) bands due to strong coupling of the electrons to lattice vibrations are observed. The results are compared to FT-Raman spectra. Electrochemical p-doping shows two different doping regimes depending on the electrochemical potential. The narrow linewidth and low absorption intensities of the IRAV bands indicate a strong localization of the doping induced charge carriers, which is ascribed to a tilted geometry of the conjugated backbone due to steric repulsion effects. (C) 1999 American Institute of Physics. [S0021-9606(99)51924-7].
Notes: Johannes Kepler Univ, A-4040 Linz, Austria. Limburgs Univ Ctr, Inst Mat Onderzoek, B-3590 Diepenbeek, Belgium. Univ Calif Los Angeles, Dept Chem & Biochem, Los Angeles, CA 90095 USA. CNR, Ist Chim Macromol, I-20133 Milan, Italy. Abo Akad Univ, Analyt Chem Lab, SF-20500 Turku, Finland.Neugebauer, H, Johannes Kepler Univ, Altenbergerstr 69, A-4040 Linz, Austria.
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ISI #: 000080745500049
Type: Journal Contribution
Validations: ecoom 2000
Appears in Collections:Research publications

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