title: 2,2'-bipyridine lariat calixcrowns: a new class of encapsulating ligands forming highly luminescent Eu3+ and Tb3+ complexes
abstract: A new class of calix[4]arene crown ethers with one or two bipyridines appended to the polyether ring (lariat calixcrowns) have been designed and synthesized; the luminescence properties of their Eu3+ and Tb3+ complexes have been studied in acetonitrile. In this solvent, long lifetimes for the metal emitting states and high metal-luminescence intensities obtained upon ligand excitation have been observed in both Eu3+ and Tb3+ complexes. The association constants in methanol have been determined for some of the complexes studied.
authors.affiliation: Dipartimento di Chimica Organica e Industriale dell'Universita, Parma, Italy.
authors.initials: C
authors.lastname: Fischer
authors.initials: G
authors.lastname: Sarti
authors.initials: A
authors.lastname: Casnati
authors.initials: B
authors.lastname: Carrettoni
authors.initials: I
authors.lastname: Manet
authors.initials: R
authors.lastname: Schuurman
authors.initials: M
authors.lastname: Guardigli
authors.initials: N
authors.lastname: Sabbatini
authors.initials: R
authors.lastname: Ungaro