title: Explaining the Cyclic Voltammetry of a Poly(1,4-phenylene-ethynylene)-alt-poly(1,4-phenylene-vinylene) Copolymer upon Oxidation by using Spectroscopic Techniques.
abstract: Poly(1,4-phenylene-ethynylene)-alt-poly(1,4-phenylene-vinylene) (PPE-PPV) copolymers have attracted quite a lot of attention in the last few years for electronic device applications owing to their enhanced fluorescence. In this work, we focus on one particular PPE-PPV copolymer with dissymmetrically substituted 1,4-phenylene-ethynylene and symmetrically substituted 1,4-phenylene-vinylene building units. Six successively performed cyclic voltammograms are presented, measured during the oxidation reactions. As the oxidation onset of the electrochemical reaction shifts to lower potentials in each cycle, this behavior is elucidated by using spectroscopic techniques ranging from UV/Vis/near-IR to mid-IR including spin-resonance techniques. Hence, these findings help to explain some of the copolymer's most advantageous properties in terms of possible oxidation products.
authors.affiliation: Institute of Polymer Science, Johannes Kepler University Linz, Altenbergerstraße 69, 4040, Linz, Austria.|Linz Institute for Organic Solar Cells (LIOS), Physical Chemistry, Johannes Kepler University Linz, Altenbergerstraße 69, 4040, Linz, Austria.
authors.forename: Christina
authors.initials: C
authors.lastname: Enengl
authors.affiliation: Institute of Polymer Science, Johannes Kepler University Linz, Altenbergerstraße 69, 4040, Linz, Austria.|Linz Institute for Organic Solar Cells (LIOS), Physical Chemistry, Johannes Kepler University Linz, Altenbergerstraße 69, 4040, Linz, Austria.
authors.forename: Sandra
authors.initials: S
authors.lastname: Enengl
authors.affiliation: Linz Institute for Organic Solar Cells (LIOS), Physical Chemistry, Johannes Kepler University Linz, Altenbergerstraße 69, 4040, Linz, Austria.|Department of Chemical Engineering, Electrochemistry, Corrosion and Energetic Valorization Laboratory, A. MIRA University, Targa Ouzemmour, 06000, Bejaia, Algeria.
authors.forename: Nassima
authors.initials: N
authors.lastname: Bouguerra
authors.affiliation: Linz Institute for Organic Solar Cells (LIOS), Physical Chemistry, Johannes Kepler University Linz, Altenbergerstraße 69, 4040, Linz, Austria.|Czech Metrology Institute, Okruzni 31, 638 00, Brno, Czech Republic.
authors.forename: Marek
authors.initials: M
authors.lastname: Havlicek
authors.affiliation: Linz Institute for Organic Solar Cells (LIOS), Physical Chemistry, Johannes Kepler University Linz, Altenbergerstraße 69, 4040, Linz, Austria.
authors.forename: Helmut
authors.initials: H
authors.lastname: Neugebauer
authors.affiliation: Linz Institute for Organic Solar Cells (LIOS), Physical Chemistry, Johannes Kepler University Linz, Altenbergerstraße 69, 4040, Linz, Austria.
authors.forename: Daniel A M
authors.initials: DA
authors.lastname: Egbe
keywords: IR spectroscopy; PPE-PPV copolymers; doping; electrochemistry; spectroelectrochemistry