title: Spectroelectrochemical study of the oxidative doping of polydialkylphenyleneethynylene using iterative target transformation factor analysis.
abstract: Iterative target transformation factor analysis (ITTFA) was used to determine the spectra of the individual species generated during the oxidative p-doping of films of poly(para-phenyleneethynylene) (PPE). UV-visible spectra of PPE films on transparent electrodes were obtained in-situ during an anodic sweep. ITTFA identified 4 species present during the oxidation, which we assign as neutral polymer, polaron species, bipolaron species, and a species formed by further bipolaron reaction. The region of electrochemical stability for each of these species was identified and their potential-dependent profiles were obtained. This work is the first deconvolution of conjugated polymer spectroelectrochemistry.
authors.affiliation: Department of Chemistry and Biochemistry, University of South Carolina, Columbia, SC 29201, USA.
authors.forename: U
authors.initials: U
authors.lastname: Evans
authors.forename: O
authors.initials: O
authors.lastname: Soyemi
authors.forename: M S
authors.initials: MS
authors.lastname: Doescher
authors.forename: U H
authors.initials: UH
authors.lastname: Bunz
authors.forename: L
authors.initials: L
authors.lastname: Kloppenburg
authors.forename: M L
authors.initials: ML
authors.lastname: Myrick
mesh_terms: D004563:Electrochemistry; D004566:Electrodes; D011108:Polymers / Q000032:analysis*
chemical_list: D011108:Polymers