title: Synthesis of three series of ruthenium tris-diimine complexes containing acridine-based π-extended ligands using an efficient "chemistry on the complex" approach.
abstract: The preparation and characterization of three series of novel ruthenium(ii) complexes are reported, each series differing by the nature of the ancillary ligands (2,2'-bipyridine - bpy, 1,10-phenanthroline - phen or 1,4,5,8-tetraazaphenanthrene - TAP). The third ligand was either the heptacyclic heterocycle dipyrido[3,2-a:2',3'-c]quinolino[3,2-h]phenazine (dpqp) substituted at position 12 by an hydroxyl (oxo), 2,2-dimethoxyethylamine (DMEA) or halogeno (Cl or Br) substituent, or the octacyclic dipyrido[3,2-a:2',3'-c]pyrido[2,3,4-de]quinolino[3,2-h]phenazine (dppqp), prepared by a multi-step "chemistry on the complex" strategy from [RuL2(oxo-dpqp)](PF6)2. The three steps, halogenation, substitution by a dimethoxyethylamino group and cyclization in trifluoroacetic acid, were performed in reasonable to high yields depending on the nature of the ancillary ligands. Isolation and purification processes were facilitated by the ability to switch the solubility of the complex from aqueous to organic solvents, depending on the counter-ion. All new complexes were fully characterized; in particular their absorption properties were compared by UV-vis spectroscopy. Finally, π-stacking properties induced by these extended ligands were studied by1H NMR studies and quantum chemical calculations.
authors.affiliation: Département de Pharmacochimie Moléculaire, Université Grenoble Alpes, CNRS, UMR 5063, F-38041 Grenoble, France. martine.demeunynck@univ-grenoble-alpes.fr and Laboratoire de Chimie et Biologie des Métaux, Université Grenoble Alpes, CNRS UMR 5249, CEA, 17 rue des martyrs, F-38054, Grenoble Cedex 9, France. murielle.chavarot-kerlidou@cea.fr.
authors.forename: Jean-François
authors.initials: JF
authors.lastname: Lefebvre
authors.affiliation: Département de Pharmacochimie Moléculaire, Université Grenoble Alpes, CNRS, UMR 5063, F-38041 Grenoble, France. martine.demeunynck@univ-grenoble-alpes.fr and Chimie Organique et Photochimie, Université Libre de Bruxelles, CP 160/08, 50 Avenue Franklin Roosevelt, B1050 Brussels, Belgium. cmouche@ulb.ac.be.
authors.forename: Dounia
authors.initials: D
authors.lastname: Saadallah
authors.affiliation: Institute for Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743 Jena, Germany.
authors.forename: Philipp
authors.initials: P
authors.lastname: Traber
authors.affiliation: Institute for Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743 Jena, Germany.
authors.forename: Stephan
authors.initials: S
authors.lastname: Kupfer
authors.affiliation: Institute for Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743 Jena, Germany.
authors.forename: Stefanie
authors.initials: S
authors.lastname: Gräfe
authors.affiliation: Institute for Physical Chemistry and Abbe Center of Photonics, Friedrich Schiller University Jena, Helmholtzweg 4, 07743 Jena, Germany and Leibniz Institute of Photonic Technology Jena, Department Functional Interfaces, Albert-Einstein-Straße 9, 07745 Jena, Germany.
authors.forename: Benjamin
authors.initials: B
authors.lastname: Dietzek
authors.affiliation: Département de Pharmacochimie Moléculaire, Université Grenoble Alpes, CNRS, UMR 5063, F-38041 Grenoble, France. martine.demeunynck@univ-grenoble-alpes.fr.
authors.forename: Isabelle
authors.initials: I
authors.lastname: Baussanne
authors.affiliation: Service de Synthèse et de Spectrométrie de Masse Organiques, Centre Interdisciplinaire de Spectrométrie de Masse (CISMa), Université de Mons - UMONS, 23 place du Parc, B7000 Mons, Belgium.
authors.forename: Julien
authors.initials: J
authors.lastname: De Winter
authors.affiliation: Service de Synthèse et de Spectrométrie de Masse Organiques, Centre Interdisciplinaire de Spectrométrie de Masse (CISMa), Université de Mons - UMONS, 23 place du Parc, B7000 Mons, Belgium.
authors.forename: Pascal
authors.initials: P
authors.lastname: Gerbaux
authors.affiliation: Chimie Organique et Photochimie, Université Libre de Bruxelles, CP 160/08, 50 Avenue Franklin Roosevelt, B1050 Brussels, Belgium. cmouche@ulb.ac.be.
authors.forename: Cécile
authors.initials: C
authors.lastname: Moucheron
authors.affiliation: Laboratoire de Chimie et Biologie des Métaux, Université Grenoble Alpes, CNRS UMR 5249, CEA, 17 rue des martyrs, F-38054, Grenoble Cedex 9, France. murielle.chavarot-kerlidou@cea.fr.
authors.forename: Murielle
authors.initials: M
authors.lastname: Chavarot-Kerlidou
authors.affiliation: Département de Pharmacochimie Moléculaire, Université Grenoble Alpes, CNRS, UMR 5063, F-38041 Grenoble, France. martine.demeunynck@univ-grenoble-alpes.fr.
authors.forename: Martine
authors.initials: M
authors.lastname: Demeunynck