Photochromism and metal complexation of a macrocyclic styryl naphthopyran

E. Tulyakova (1) , O. Fedorova (2) , Jean Claude Micheau (3) , S. Paramonov (2, 4) , V. Lokshin (4) , G. Vermeersch (1) , S. Delbaere (1)

1 LASIRE - Laboratoire Avancé de Spectroscopie pour les Intéractions la Réactivité et l'Environnement - UMR 8516
2 Institute of Organoelement Compounds
3 IMRCP - Interactions moléculaires et réactivité chimique et photochimique
4 CINaM - Centre Interdisciplinaire de Nanoscience de Marseille

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 1H 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.

Mots clés: photochromism; structure elucidation; supramolecular chemistry; alkaline earth metals; nmr spectroscopy

Domaines: Chimie théorique et/ou physique; Chimie-Physique [physics.chem-ph]

E. Tulyakova, O. Fedorova, Jean Claude Micheau, S. Paramonov, V. Lokshin, et al.. Photochromism and metal complexation of a macrocyclic styryl naphthopyran. ChemPhysChem, 2011, 12 (7), pp.1294 - 1301. ⟨10.1002/cphc.201100052⟩. ⟨hal-00593264⟩