title: Similarities and differences in the optical response of perylene-based hetero-bichromophores and their monomeric units.
abstract: The linear and nonlinear optical response of molecular hetero-dimers and their composing perylene units is explored with fluorometry, steady-state and transient absorption, and coherent two-dimensional electronic spectroscopy. Supported by a Förster theory approach and ab initio calculations, we disclose the photoinduced dynamics comprising excitonic coupling, conformational changes, charge transfer, and relaxation dynamics. The influence of the actual orientation of the two chromophore units on these processes is investigated by employing two bichromophores built of the same monomeric units but linked differently.
authors.affiliation: Institut für Physikalische und Theoretische Chemie, Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.
authors.forename: Ulrike
authors.initials: U
authors.lastname: Selig
authors.forename: Patrick
authors.initials: P
authors.lastname: Nuernberger
authors.forename: Volker
authors.initials: V
authors.lastname: Dehm
authors.forename: Volker
authors.initials: V
authors.lastname: Settels
authors.forename: Marcel
authors.initials: M
authors.lastname: Gsänger
authors.forename: Bernd
authors.initials: B
authors.lastname: Engels
authors.forename: Frank
authors.initials: F
authors.lastname: Würthner
authors.forename: Tobias
authors.initials: T
authors.lastname: Brixner
mesh_terms: D005453:Fluorescence; D015394:Molecular Structure; D055620:Optical Phenomena; D010569:Perylene / Q000031:analogs & derivatives / Q000138:chemical synthesis / Q000737:chemistry*; D011789:Quantum Theory
chemical_list: D010569:Perylene