title: Tris(tetraceno)triquinacenes: synthesis and photophysical properties of threefold linearly extended tribenzotriquinacenes.
abstract: The linear extension of the rigid, C(3v)-symmetrical carbon framework of tribenzotriquinacene (TBTQ) along its three wings is reported. The key step of the extension procedure consists of a Diels-Alder reaction of three ortho-quinodimethane units generated in situ at the triquinacene core. The use of 1,4-naphthoquinone provides a facile and particularly efficient access to tris(tetraceno)-annellated triquinacenes. The steady-state photophysical properties of these new oligotetracenes bearing three mutually orthogonal chomophores are determined and analyzed by DFT calculations.
authors.affiliation: Department of Chemistry, Bielefeld University, Universitätsstrasse 25, 33615 Bielefeld (Germany).
authors.forename: Ehsan Ullah
authors.initials: EU
authors.lastname: Mughal
authors.forename: Jens
authors.initials: J
authors.lastname: Eberhard
authors.forename: Dietmar
authors.initials: D
authors.lastname: Kuck
keywords: UV/Vis spectroscopy; acenes; photophysics; polycyclic compounds; quinones