title: Diferrocenyl oligothiophene wires: Raman and quantum chemical study of valence-trapped cations.
abstract: A combination of Raman spectroscopy and density functional theory calculations is used to describe the structural and spectroscopic properties of the different isomeric cations of diferrocenyl quaterthiophenes. Isomerisation of the thienyl β-positions provides site selective oxidation, which gives rise to species that can interconvert by moving the charge over the bridge. The spectroscopic study allows us to describe a sequence of stationary trapped cationic, either ferrocenyl or thienyl, states which constitutes an energy cascade of accessible sites through which the charge transfer can proceed.
authors.affiliation: Department of Physical Chemistry, University of Málaga, Campus de Teatinos s/n, 29071 Málaga, Spain.
authors.forename: Sandra
authors.initials: S
authors.lastname: Rodríguez González
authors.forename: Juan
authors.initials: J
authors.lastname: Aragó
authors.forename: Pedro M
authors.initials: PM
authors.lastname: Viruela
authors.forename: Enrique
authors.initials: E
authors.lastname: Ortí
authors.forename: Juan T
authors.initials: JT
authors.lastname: López Navarrete
authors.forename: Masa-aki
authors.initials: MA
authors.lastname: Sato
authors.forename: Juan
authors.initials: J
authors.lastname: Casado