title: Optical properties of fully conjugated cyclo[n]thiophenes - An experimental and theoretical approach.
abstract: Optical properties of two series of fully conjugated cyclo[n]thiophenes were analyzed experimentally and theoretically. The absorption spectra reveal a shift to higher wavelengths with increasing size of the cycles, which can be successfully described by an excitonic approach based on a Frenkel exciton Hamiltonian. Furthermore, intriguing new bands in the absorption and fluorescence spectra of the smaller macrocycles disclose the dominance of their ring strain.
authors.affiliation: Institute of Organic Chemistry II and Advanced Materials, University of Ulm, Albert-Einstein-Allee 11, 89081 Ulm, Germany.
authors.forename: Elena
authors.initials: E
authors.lastname: Mena-Osteritz
authors.forename: Fan
authors.initials: F
authors.lastname: Zhang
authors.forename: Günther
authors.initials: G
authors.lastname: Götz
authors.forename: Peter
authors.initials: P
authors.lastname: Reineker
authors.forename: Peter
authors.initials: P
authors.lastname: Bäuerle