title: Synthesis of functionalized ethynylphenothiazine fluorophores.
abstract: Alkynylated and butadiynyl-bridged phenothiazines with variable functionalization can be synthesized in good yields by cross-coupling and condensation approaches. In addition, the structure of the diethynylated phenothiazine (7a) has been corroborated by an X-ray structure analysis. These oligofunctional heterocycles are fluorescent with modest quantum yields (Phi(f) = 20-35%) and represent suitable building blocks for novel photoexcitable molecular wires.
authors.affiliation: Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13 (Haus F), D-81377 München, Germany.
authors.forename: C S
authors.initials: CS
authors.lastname: Krämer
authors.forename: K
authors.initials: K
authors.lastname: Zeitler
authors.forename: T J
authors.initials: TJ
authors.lastname: Müller
mesh_terms: D018360:Crystallography, X-Ray; D010640:Phenothiazines / Q000138:chemical synthesis* / Q000737:chemistry
chemical_list: D010640:Phenothiazines