title: Photochromism and metal complexation of a macrocyclic styryl naphthopyran.
abstract: A macrocyclic benzo-15-crown-5 ether unit tethered to a photochromic naphthopyran by a styryl spacer (MEN) is shown to form a 1:1 complex with magnesium(II). The structure and dynamics of the specific host-metal interactions were investigated by PFG-NMR analysis. A combination of UV/Vis and variable temperature multi-dimensional (1)H NMR photokinetic analysis of the crown-containing styryl naphthopyran and its metal complex was used to probe the effect of metal complexation on the photochromism.
authors.affiliation: CNRS UMR 8516, Université Lille Nord de France, 3 rue du Professeur Laguesse BP83, F-59006 Lille, France.
authors.forename: Elena V
authors.initials: EV
authors.lastname: Tulyakova
authors.forename: Olga A
authors.initials: OA
authors.lastname: Fedorova
authors.forename: Jean-Claude
authors.initials: JC
authors.lastname: Micheau
authors.forename: Sergey V
authors.initials: SV
authors.lastname: Paramonov
authors.forename: Vladimir
authors.initials: V
authors.lastname: Lokshin
authors.forename: Gaston
authors.initials: G
authors.lastname: Vermeersch
authors.forename: Stephanie
authors.initials: S
authors.lastname: Delbaere